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Chemical Nomenclature. Writing names from formulas and formulas from names. Chemical Nomenclature Name to Formula. Determine the Type of Compound. 3 Types of Compounds Ionic Covalent Acids. Types of compounds. Identifying Ionic Compounds Name to formula.

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chemical nomenclature

Chemical Nomenclature

Writing names from formulas and formulas from names

determine the type of compound
Determine the Type of Compound
  • 3 Types of Compounds
    • Ionic
    • Covalent
    • Acids
identifying ionic compounds name to formula
Identifying Ionic CompoundsName to formula
  • Contain a metal or a polyatomic ion
    • Identifying metals
      • Use name to find symbol, find on periodic table (left and below stairstep)
    • Identifying polyatomic ions
      • KNOW IONS
      • End in ---ate or ---ite with few exceptions
        • Cyanide CN-
        • Hydroxide OH-
        • Peroxide O22-
        • Ammonium NH4+
all of the following are ionic
All of the following are ionic
  • strontium sulfide
    • Stronium (Sr) is a metal
  • cobalt (II) arsenide
    • Cobalt (Co) is a metal
  • cesium phosphate
    • Cesium (Cs) is a metal and phosphate is a polyatomic ion
  • ammonium sulfate
    • Ammonium and sulfate are polyatomic ions
identifying covalent compounds
Identifying Covalent Compounds

Covalent compounds are made from two nonmetals

Name to formula

  • Determine symbols from names
    • Check on the periodic table
    • (Nonmetals are to the right and above the stairstep line)
all of the following are covalent
All of the following are covalent
  • carbon disulfide: carbon(C) and sulfur (S) are nonmetals
  • sulfur hexafluoride: sulfur (S) and fluorine(F) are nonmetals
  • dinitrogen pentoxide: nitrogen (N) and oxygen (O) are nonmetals
identifying acids
Identifying Acids
  • Name to Formula
    • Acids have the word “acid” in the name
  • All of the Following are Acids
    • hydrochloric acid
    • sulfuric acid
    • nitric acid
identifying compound type from name
Identifying Compound Type from Name
  • For each of the following, determine if it is ionic, an acid, or covalent:
    • A. ammonium sulfide
    • B. cesium chloride
    • C. nitrogen triiodide
    • D. telluric acid

Answers

determining formulas of ionic compounds
Determining Formulas of Ionic Compounds

4 types of ions

  • Representative metal ions
  • Transition and post transitional metal ions
    • All others
  • Monatomic nonmetal ions
  • Polyatomic ions
representative metal ions
Representative Metal Ions
  • Group IA, IIA, IIIA, Zn, Cd and Ag
  • Charge = group number
  • Name = element name
    • Barium ion: Ba, Ba is in group IIA, so charge is +2

Ba2+

    • Aluminum ion: Al, Al is in group IIIA, so charge is +3

Al3+

    • Zinc ion: Zn, Zn is in group IIB,

so charge is +2

Zn2+

find the charges of the following ions
Find the charges of the following ions
  • calcium ion
  • cadmium ion
  • potassium ion
  • gallium ion
  • Answers
transition metal ions
Transition metal ions
  • All other metals
    • (includes post-transitional metals…IVA, VA, VIA)
    • Form >1 ion
  • Name is metal name (charge)
    • Charge is in Roman numerals
transition metal ions1
Transition metal Ions

Ion Name: Symbol and Charge

iron(II) Fe2+

tin(IV) Sn4+

tin(II) Sn2+

chromium(VI) Cr6+

nonmetal ions
Nonmetal Ions
  • Monatomic
  • Charge = group # - 8

Ion name Group #ChargeSymbol

oxide 6 (6 - 8) = -2 O2-

phosphide 5 (5 - 8) = -3 P3-

iodide 7 (7 - 8) = -1 I-

determine the charges on the following ions
Determine the charges on the following ions
  • Sulfide
  • Nitride
  • Chloride
  • Carbide

Answers

memorize these polyatomic ions
Memorize These Polyatomic Ions

Chemistry 152 List of Polyatomic Ions to be Memorized

Name Ion Name Ion

phosphate PO43- carbonate CO32-

hydrogen phosphate HPO42- hydrogen carbonate HCO3-

dihydrogen phosphate H2PO4- nitrate NO3-

permanganate MnO4- nitrite NO2-

dichromate Cr2O72- acetate C2H3O2-

chromate CrO42- oxalate C2O42-

perchlorate ClO4- borate BO33-

chlorate ClO3- hydroxide OH-

chlorite ClO2- cyanide CN-

hypochlorite ClO- thiocyanate SCN-

periodate IO4- peroxide O22-

iodate IO3- ammonium NH4+

iodite IO2- mercury(I) Hg22+

hypoiodite IO-

arsenate AsO43-

sulfate SO42-

sulfite SO32-

hydrogen sulfate HSO4-

thiosulfate S2O32-

putting ions together
Putting Ions Together
  • Charges have to cancel
    • Multiply ions by some “multiplier” to bring charges to least common multiple (LCM)
    • multiplier becomes subscript
determine the formula for a compound made from fe 3 and so 4 2
Determine the formula for a compound made from Fe 3+ and SO4 2-

IonMultiplierLCM

Fe3+ X 2 = 6

SO42- X 3 = -6

0

Sum of the charges is zero

The multipliers become the subscripts and the formula is:

Fe2(SO4)3

determine the formulas of the following ionic compounds
Determine the formulas of the following ionic compounds
  • potassium sulfide
  • calcium phosphate
  • lead (IV) chloride
  • ammonium nitrate
formulas of ionic compounds from names
Formulas of Ionic Compounds from names

potassium sulfide:

symbols: K, S

charges: K: group 1 metal ==> K+

S: group VI nonmetal ==> s2-

putting together K+ X 2 = 2

S2- X 1 = -2 formula = K2S

calcium phosphate:

symbols: Ca, PO43-

charges: Ca: group II metal ==> Ca2+

PO43- : polyatomic ion ==> PO43-

putting together Ca 2+ X 3 = 6

PO43- X 2 = -6 formula = Ca3(PO4)2

formulas of ionic compounds from names1
Formulas of Ionic Compounds from names

lead(IV)chloride:

symbols: Pb, Cl

charges: Pb: post - transition metal

name says charge is 4 ==> Pb4+

Cl: nonmetal in group VII ==> Cl-

putting together

Pb4+ X 1 = 4

Cl- X 4 = -4 formula = PbCl4

ammonium nitrate:

symbols: both polyatomic ions so elements and charges

ammonium = NH4+

nitrate = NO3-

putting together

NH4+ X 1 = 1

NO3- X 1 = -1 formula = NH4NO3

determine the formulas for the following ionic compounds
Determine the formulas for the following ionic compounds
  • sodium oxide
  • barium hydroxide
  • cobalt (II) iodide
  • ammonium sulfate
  • Name to Formula Chart
  • answers
covalent compounds
Covalent Compounds
  • Binary Compounds between 2 nonmetals
  • NO CHARGES
    • All bonds are covalent
    • Difficult to predict how will combine
  • Name tells formula
    • Prefix first element prefix second-ide
      • Prefixes are mono, di, tri, tetra, penta etc
covalent compounds examples
Covalent CompoundsExamples

carbon disulfide CS2

sulfur hexafluoride SF6

dinitrogen pentoxide N2O5

determine the formulas of the following covalent compounds
Determine the formulas of the following covalent compounds
  • carbon tetrabromide
  • sulfur difluoride
  • dichlorine heptoxide
  • Answers
two types of acids
Two Types of Acids
  • Binary
    • Only two elements
    • HX
    • Name is hydro x ic acid
      • Example: hydrochloric acid = HCl(aq)
  • Oxyacids
    • Nonbinary
    • Contain a polyatomic ion
      • H-polyatomic (with appropriate subscripts)
determine if the following acids are binary or oxyacids
Determine if the following acids are binary or oxyacids
  • Hydrobromic acid
  • Iodic acid
  • Nitrous acid
  • Hydroiodic acid
  • Phosphoric acid
  • answers
formulas of binary acids
Formulas of Binary acids
  • An acid is like an ionic compound where the metal is H
    • H has a +1 charge
  • Determine the formulas of the following binary acids
    • Hydroiodic acid
    • Hydrobromic acid
    • Hydrosulfuric acid
    • answers
oxyacids nonbinary
Oxyacids (nonbinary)
  • H__polyatomic ion
  • Number of H on acid will be the same as the charge on the ion

IonAcid

ClO3- HClO3(aq)

SO42- H2SO4(aq)

PO43- H3PO4(aq)

acid name related to name of polyatomic ion
Acid name related to name of polyatomic ion
  • If ion ends in ate then acid ends in ic acid
  • If ion ends in ite then acid ends in ous acid

chlorate = ClO3- , HClO3 (aq) = chloric acid

chlorite = ClO2- , HClO2(aq) = chlorous acid

write the formulas of the following acids
Write the formulas of the following acids
  • iodic acid
  • carbonic acid
  • phosphorous acid
  • answers
determine the formulas of the following
Determine the formulas of the following
  • magnesium nitride
  • iron (III) acetate
  • sulfur dioxide
  • hydrofluoric acid
  • nitrous acid
  • Answers
determine the type of compound1
Determine the Type of Compound
  • 3 Types of Compounds
    • Ionic
    • Covalent
    • Acids
identifying ionic compounds formula to name
Identifying Ionic Compounds, Formula to Name
  • Contain a metal or polyatomic ion
    • Identifying metals
      • Look for symbol of metal
    • Identifying polyatomic ions
      • KNOW IONS
      • All contain > 1 atom
      • Compounds containing polyatomic ions will have at least three elements
all of the following are ionic1
All of the following are ionic
  • FeCl3: Fe is a metal
  • NaBr: Na is a metal
  • Cr(NO3)3: Cr is a metal and NO3 is a polyatomic ion
  • MgCO3: Mg is a metal and CO3 is a polyatomic ion
  • Ni(C2H3O2)2: Ni is a metal and C2H3O2 is a polyatomic ion
  • NH4I : NH4 is a polyatomic ion
identifying covalent compounds1
Identifying Covalent Compounds

Covalent compounds are made from two nonmetals

Formula to Name

  • Check positions of the symbols on the periodic table
all of the following are covalent1
All of the following are covalent
  • PCl3: P and Cl are nonmetals
  • SeO2: Se and O are nonmetals
  • CCl4: C and Cl are nonmetals
identifying acids1
Identifying Acids

Formula to name

  • All acids begin with H and are aqueous, therefore they have the subscript (aq)
    • H_____(aq)
all of the following are acids
All of the Following are Acids
  • HI(aq)
  • H3PO4(aq)
  • HC2H3O2(aq)
identifying compound type from formula
Identifying Compound Type from Formula

For each of the following, determine if it is ionic, an acid, or covalent:

MoF6

CaCO3

HI(aq)

CSe2

Answers

determining names of ionic compounds
Determining Names of Ionic Compounds

Name ions

4 types of ions

  • Representative metal ions
  • Transition and post transitional metal ions
    • All others
  • Monatomic nonmetal ions
  • Polyatomic ions
representative metal ions1
Representative Metal Ions
  • Group IA, IIA, IIIA, Zn, Cd and Ag
  • Charge = group number
  • Name = element name
    • Ba2+ Barium ion:
    • Al3+ Aluminum ion
    • Zn2+ Zinc ion
transition metal ions2
Transition metal ions
  • All other metals
    • (includes post-transitional metals…IVA, VA, VIA)
    • Form >1 ion
  • Name is metal name (charge)
    • Charge is in Roman numerals
transition metal ions3
Transition metal Ions

Ion Name: Symbol and Charge

iron(II) Fe2+

tin(IV) Sn4+

tin(II) Sn2+

chromium(VI) Cr6+

determining names of transition metal ions from formulas
Determining names of transition metal ions from formulas

Have to look at what it is combined with:

FeBr2

Ions: Fe = transition metal: iron( x ) (We need to determine the charge.)

Br = nonmetal ion:

We need to determine the charge on the iron. We can do this by looking at what it is combined with as below where x represents the charge on the iron. We use the same method we used to determine formulas. We find the least common multiple. Here we have the multipliers (subscripts)

Ion subscript LCM

Fex X 1 =

Br- X 2 = -2

Since the charge on the bromine is -1 and there are two of them, the LCM must be 2.

Ion subscript LCM

Fex X 1 = 2

Br- X 2 = -2

The total charge from the iron must be 2. Since there is only 1 iron ion, the charge on that ion (x) must be +2 so it is

iron (II).

names of nonmetal ions
Names of Nonmetal ions

Name = stem---ide

SymbolIon Name

O2- oxide

P3- phosphide

I- iodide

name the following ionic compounds
Name the following ionic compounds
  • SrI2
  • Al2(SO4)3
  • Cr2O3
  • Ti3(PO4)4
names of ionic compounds
Names of Ionic Compounds

SrI2

Ions: Sr = representative metal: strontium

I = nonmetal ion: iodide

strontium iodide

Al2(SO4)3

Ions: Al = representative metal: aluminum

SO42- = polyatomic ion: sulfate

aluminum sulfate

Cr2O3

Ions: Cr = transition metal: chromium( )

(Here, we need to determine the charge.)

O = nonmetal ion: oxide

chromium( ) oxide

To finish, we need to determine the charge on the chromium as before

Ion subscript LCM

Crx X 2 =

O2- X 3 = -6

Since the charge on the oxygen is -2 and there are three of them, the LCM must be 6.

Ion subscript LCM

Crx X 2 = 6

O2- X 3 = -6

The total charge from the chromium must be 6. Since there are 2 chromium ions, the charge on the ions (x) must be +3 so it is chromium (III). The name is, therefore,

chromium(III)oxide

:

names of ionic compounds1
Names of Ionic Compounds

Ti3(PO4)4

ions: Ti: transition metal: titanium( )

PO43- polyatomic ion: phosphate

Like we did for the last example:

Ion subscript LCM

Tix X 3 =

PO43- X 4 = -12

The LCM must be 15 and the charge on the titanium must be 12/3 = 4. The name of the ion is titanium(IV) as shown below:

Ion subscript LCM

Ti+4 X 3 = 12

PO43- X 4 = -12

So, the name will be: titanium(IV)phosphate

name the following ionic compounds1
Name the following ionic compounds
  • CaCl2
  • Sr(C2H3O2)2
  • FeBr2
  • V3(PO4)5
  • answers
covalent compounds1
Covalent Compounds
  • Binary Compounds between 2 nonmetals
  • Formula tells name
    • Prefix first element prefix secondide
      • Prefixes are mono, di, tri, tetra, penta etc
      • Prefixes are subscripts
covalent compounds examples1
Covalent CompoundsExamples

CO carbon monoxide

SCl6 sulfur hexachloride

N2O3 dinitrogen trioxide

name the following
Name the following:
  • CO2
  • PCl3
  • N2O
  • answers
two types of acids1
Two Types of Acids
  • Binary
    • Only two elements
    • HX
    • Name is hydro x ic acid
      • Example: hydrochloric acid = HCl
  • Oxyacids
    • Nonbinary
    • Contain a polyatomic ion
      • H-polyatomic (with appropriate subscripts)
names of binary acids
Names of Binary acids
  • Formula is HX
  • Name is hydro x ic acid
    • Example, HCl is hydrochloric acid
  • Determine the names of the following binary acids
    • HF(aq)
    • HI(aq)
    • H2Se(aq)
    • answers
oxyacid nomenclature
Oxyacid Nomenclature
  • Acid name related to name of polyatomic ion
  • If ion ends in ate then acid ends in ic acid
  • If ion ends in ite then acid ends in ous acid

chlorate = ClO3- , HClO3(aq) = chloric acid

chlorite = ClO2- , HClO2(aq) = chlorous acid

find the names of the following
Find the names of the following:
  • H2SO4(aq)
    • Ion is SO42-,which is sulfate.
      • Acid is sulfuric acid
  • HClO(aq)
    • Ion is ClO-, which is hypochlorite.
      • Acid is hypochlorous acid
name the following acids
Name the following acids
  • H3PO4(aq)
  • H2SO3(aq)
  • HBrO4(aq)
  • answers
name the following1
Name the following
  • NaI
  • MnO2
  • N2H4
  • CaCO3
  • HIO4(aq)
  • BaNa2
  • answers
type of compound from name
Type of Compound From Name
  • Ammonium sulfide: ammonium (NH4+) is a polyatomic ion: ionic
  • Cesium chloride: cesium (Cs) is a metal: ionic
  • Nitrogen triiodide: nitrogen (N) and iodine (I) are nonmetals: covalent
  • Telluric acid: has the word "acid" in the name:

acid

Back

charges on representative metal ions
Charges on representative metal ions
  • calcium ion: calcium is in group IIA : Ca2+
  • cadmium ion: cadmium is in group IIB Cd2+
  • potassium ion: potassium is in group IA: K+
  • Gallium ion: gallium is in group IIIA: Ga3+
  • Back
charges on nonmetal ions
Charges on nonmetal ions
  • Sulfide: group VI 6 – 8 = -2

S2-

  • Nitride: group V 5 – 8 = -3

N3-

  • Chloride group VII 7 – 8 = -1

Cl-

  • Carbide group IV 4 – 8 = -4

C4-

back

formulas of ionic compounds from names answers
Formulas of Ionic Compounds from names (Answers)

sodium oxide:

symbols: Na, O

charges: Na: group 1 metal ==> Na+

O: group VI nonmetal ==> O2-

putting together Na+ X 2 = 2

O 2- X 1 = -2 formula = Na2O

barium hydroxide:

symbols: Ba, OH-

charges: Ba: group II metal ==> Ba2+

OH: polyatomic ion ==> OH-

putting together Ba 2+ X 1 = 2

OH- X 2 = -2 formula = Ba(OH)2

formulas of ionic compounds from names answers1
Formulas of Ionic Compounds from names (Answers)

cobalt(II)iodide:

symbols: Co, I

charges: Co: transition metal

name says charge is 2 ==> Co2+

I: nonmetal in group VII ==> I-

putting together

Co2+ X 1 = 2

I- X 2 = -2 formula = CoI2

ammonium sulfate:

symbols: both polyatomic ions so elements and charges

ammonium = NH4+

sulfate = SO42-

putting together

NH4+ X 2 = 2

back SO42- X 1 = -2 formula = (NH4)2SO4

covalent compounds from names
Covalent Compounds from Names
  • carbon tetrabromide: 1 carbon, 4 bromine

CBr4

  • sulfur difluoride: 1 sulfur, 2 fluorine

SF2

  • dichlorine heptoxide: 2 chlorine, 7 oxygen Cl2O7
  • back
binary acid or not
Binary acid or not
  • Hydrobromic acid; has “hydro” in it
    • binary
  • Iodic acid; doesn’t have “hydro” in it
    • not binary
  • Nitrous acid; doesn’t have “hydro” in it
    • not binary
  • Hydroiodic acid, has “hydro” in it
    • binary
  • Phosphoric acid, doesn’t have “hydro” in it
    • not binary
  • back
formulas for binary acids
Formulas for binary acids
  • Hydroiodic acid
    • Other ion is iodine…I-1  HI(aq)
  • Hydrobromic acid
    • Other ion is bromine…Br-1 HBr(aq)
  • Hydrosulfuric acid
    • Other ion is sulfur…S2- H2S(aq)
  • back
formulas of oxyacids
Formulas of Oxyacids
  • Iodic acid
    • from iodate, IO3- since only one negative charge, we need only one H, acid is HIO3(aq)
  • carbonic acid
    • from carbonate, CO32-, since there are 2 negative charges, we need 2 H, acid is H2CO3(aq)
  • phosphorous acid
    • from phosphite, PO33- since there are 3 negative charges, we need 3 H, acid is H3PO3(aq)
  • back
name to formula answers
Name to Formula Answers

magnesium nitride: Magnesium is a metal so this is an ionic compound.

magnesium ==> Mg ==> Mg2+

Mg3N2 nitride ==> N ==> N3-

iron(III)acetate: Iron is a transition metal so this is an ionic compound.

iron(III) ==> Fe3+

Fe(C2H3O2)3

acetate ==> C2H3O2-

name to formula answers1
Name to Formula Answers

sulfur dioxide: Both sulfur and oxygen are nonmetals so this is a covalent compound. There is one sulfur and two oxygens.

SO2

hydrofluoric acid: Since it begins with "hydro" it is a binary acid so there are only hydrogen and fluorine.

H ==> H+

HF(aq)

F ==> F-

Nitrous acid: This is not a binary acid. It is an oxyacid. Since the acid name ends in ous acid, the ion must have been nitrite, NO2-. We have NO2- and H+

H+HNO2(aq)

NO2-

back

type of compound from formula
Type of Compound From Formula
  • MoF6: Mo (molybdenum) is a metal: ionic
  • CaCO3: Ca (calcium) is a metal: ionic
  • HI(aq) : begins with H and is aqueous: acid
  • CSe2 : C (carbon) and Se (selenium) are nonmetals:

covalent

Back

names of representative metal ions
Names of representative metal ions
  • Na+ sodium ion
  • Cd2+ cadmium ion
  • Sr2+ strontium ion
  • back
names of transition metal ions
Names of Transition metal ions

V3(PO4)5

ions: V: transition metal: vanadium( )

PO43- : polyatomic ion

Ion subscript LCM

Vx X 3 =

PO43- X 5 = -15

The LCM must be 15 and the charge on the vanadium must be 15/3 = 5 as shown below:

Ion subscript LCM

V+5 X 3 = 15

PO43- X 5 = -15

The charge on vanadium is +5 so the name of the vanadium ion is:

vanadium(V)

names of transition metal ions1
Names of Transition metal ions

Sn(CO3)2

ions: Sn: post-transition metal: tin( )

CO32- : polyatomic ion

Ion subscript LCM

Snx X 1 =

CO32- X 2 = -4

The LCM must be 4 and the charge on the tin must be 4/1 = 4 as shown below:

Ion subscript LCM

Sn+4 X 1 = 4

CO32- X 2 = -4

The charge on tin is +4 so the name of the tin ion is:

tin(IV)

back

names of nonmetal ions1
Names of nonmetal ions
  • Name = stem---ide
  • As3- arsenide
  • S2- sulfide
  • F- fluoride
  • back
names of ionic compounds answers
Names of ionic compounds (Answers)

CaCl2:

Ions: Ca = representative metal: calcium Cl = nonmetal ion: chloride

calcium chloride

Sr(C2H3O2)2:

Ions: Sr = representative metal: strontium

C2H3O2 = polyatomic ion: acetate

strontium acetate

names of ionic compounds answers1
Names of ionic compounds (Answers)

FeBr2

Ions: Fe = transition metal: iron( ) Br = nonmetal ion: bromide

iron( ) bromide

Determining the charge on the iron.

Ion subscript LCM

Fex X 1 = 2

Br- X 2 = -2

The total charge from the iron must be 2. Since there is only 1 iron ion, the charge on that ion (x) must be +2 so it is iron (II). The name is, therefore,

iron(II)bromide

V3(PO4)5

ions: V: transition metal: vanadium( )

PO43-: polyatomic ion: phosphate

Like we did for the last example:

Ion subscript LCM

Vx X 3 = 15

PO43- X 5 = -15

The total charge from the vanadium must be15. Since there are 3 vanadiums, the charge on the ions must be15/3 = 5 so the name of the ions is vanadium (V) and the name of the compound is:

vanadium(V) phosphate

back

names of covalent compounds
Names of Covalent Compounds
  • CO2 : one carbon and 2 oxygens ==> carbon dioxide
  • PCl3: one phosphorus, 3 chlorines ==> phosphorus trichloride
  • N2O: two nitrogen, one oxygen ==> dinitrogen monoxide
  • back
names of binary acids1
Names of Binary Acids
  • HF(aq) = hydrofluoric acid
  • HI(aq) = hydroiodic acid
  • H2Se(aq) = hyroselenic acid
  • back
names of oxyacids
Names of oxyacids
  • H3PO4(aq)
    • PO43- is phosphate so the acid is phosphoricacid
  • H2SO3(aq)
    • SO32- is sulfite so the acid is sulfurousacid
  • HBrO4(aq)
    • BrO4- is perbromate so the acid is perbromic acid
  • back
names from formulas
Names from formulas
  • NaI:
    • Na is a representative metal. This is an ionic compound. Since sodium is a representative metal, we don't have to specify its charge. Iodine is nonmetal ion.

sodium iodide

  • MnO2:
    • Manganese is a transition metal. This is an ionic compound. Because manganese is a transition metal, we have to determine its charge. Oxygen has a charge of -2 and there are 2 of them, so there is a total of -4 in the compound. Therefore, the manganese must be +4. Oxygen is nonmetal ion.

manganese (IV) oxide

  • N2H4:
    • N and H are both nonmetals and there are 2 (di) nitrogens and 4 (tetra) hydrogens.

dinitrogen tetrahydride

names from formulas1
Names from formulas
  • CaCO3:
    • Calcium is a representative metal and CO32- is a polyatomic ion.

calcium carbonate

  • HIO4(aq):
    • This is an acid. It contains a polyatomic ion...IO4- which is periodate

periodic acid

  • BaNa2 : two metals?..

try writing it BaNaNa…or perhaps Banana…..

It’s a banana! Ha! Ha! Ha!