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Inorganic Compounds- nomenclature. University of Lincoln presentation. This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales License. INORGANIC COMPOUNDS. Compounds composed of elements other than carbon.

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slide1

Inorganic Compounds- nomenclature

University of Lincoln presentation

This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales License

inorganic compounds
INORGANIC COMPOUNDS

Compounds composed of elements other than carbon.

Associated with the nonliving portion of the world

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nomenclature of inorganic compounds
NOMENCLATURE OF INORGANIC COMPOUNDS

Ionic Compounds

Molecular Compounds

Acids

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naming ionic compounds
NAMING IONIC COMPOUNDS

CATIONS ( POSITIVE IONS)

A. Cations formed from metal atoms have the same name as the metal.

Na+ sodium ion Zn2+ zinc ion

Al3+ aluminum ion

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B. If a metal can form cations of different charges, the positive charge is given by a Roman numeral in parenthesis following the name of the metal.

Fe2+ iron (II) ion Cu+ copper (I) ion

Fe3+ iron (III) ion Cu2+ copper (II) ion

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slide6
Ions with different charges exhibit different properties, such as color.

Most of the metals that have variable charges are transition metals.

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Apply –ous or –ic

The endings represent the lower and higher charged ions, respectively.

Fe2+ ferrous ion Cu+ cuprous ion

Fe3+ ferric ion Cu2+ cupric ion

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ionic charges of representative elements
IONIC CHARGES OF REPRESENTATIVE ELEMENTS

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formulas and names of common metal ions with more than one ionic charge
FORMULAS AND NAMES OF COMMON METAL IONS WITH MORE THAN ONE IONIC CHARGE

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C. Cations formed from nonmetals have names that end in –ium

NH4+ ammonium ion

H3O+ hydronium ion

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exercises
EXERCISES:

Name each of the following:

Sn2+

Sn4+

K+

Ba2+

Co2+

Co3+

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slide12

Sn2+ Tin (II) ion

  • Sn4+ Tin (IV) ion
  • K+ Potassium ion
  • Ba2+ Barium ion
  • Co2+ Cobalt (II) ion
  • Co3+ Cobalt (III) ion

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2. ANIONS (NEGATIVE IONS)

A. Monoatomic (one-atom) anions have names formed by replacing the ending of the name of the element with –ide

H- O2- N3- OH-

Hydride ion Oxide ionNitride ion Hydroxide ion

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B. Polyatomic (many-atoms) anions containing oxygen have names ending in –ate or –ite

These are called oxyanions

-ate is used for the most common oxyanion of an element

-ite is used for an oxyanion that has the same charge but one less O atoms

NO3- nitrate ion SO42- sulfate ion

NO2- nitrite ion SO32- sulfite ion

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Prefixes are used when the series of oxyanions of an element extends to four members, as with halogens

The prefix per- indicates one or more O atom than the oxyanion ending in –ate

The prefix hypo- indicates one less O atom than the oxyanion ending in –ite

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ClO4- perchlorate ion (one more O atom than chlorate)

ClO3-chlorate ion

ClO2- chlorite ion (one less O atom than chlorate)

ClO- hypochlorite ion (one less O atom than chlorite)

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slide17
C. Anions derived by adding H+ to an oxyanion are named by adding as a prefix the word hydrogen or dihydrogen

CO32- carbonate ion

HCO3- hydrogen carbonate ion

PO43- phosphate ion

H2PO4- dihydrogen phosphate ion

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common polyatomic ions
COMMON POLYATOMIC IONS

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3. IONIC COMPOUNDS

Names of ionic compounds consist of the cation name followed by the anion name

CaCl2 calcium chloride

Al(NO3)3 aluminum nitrate

Cu(ClO4)2 copper (II)perchlorate

cupric perchlorate

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exercises1
EXERCISES:

What is the charge of the ion typically formed by each element?

Sulfur

Lead, 4 electrons lost

Strontium

Argon

Bromine

Copper, 1 electron lost

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Sulfur 2-

  • Lead, 4 electrons lost 4+
  • Strontium 2+
  • Argon no ion formed
  • Bromine 1-
  • Copper, 1 electron lost 1+

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Name the following compounds:

CuS

K3N

SnCl2

K2S

CaI2

NaI

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slide23

CuS Copper (II) sulfide

K3N Potassium Nitride

SnCl2 Tin (II) chloride

K2S Potassium sulfide

CaI2 Calcium Iodide

NaI Sodium Iodide

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slide24

Name the following:

MgCl2

SnCl4

HgBr2

PbS2

FeO

Write the formula for each of the following:

Magnesium bromide

Aluminum oxide

Ferrous bromide

Lead (II) sulfide

Stannic oxide

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homework
HOMEWORK:
  • Name the following:
    • CoI2
    • Cs2O
    • ZnS
    • KCI
    • BaO
    • CuBr2

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CoI2 Cobalt Iodide

  • Cs2O Cesium Oxide
  • ZnS Zinc sulfide
  • KCI Potassium chloride
  • BaO Barium Oxide
  • CuBr2 Copper bromide

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slide27
NAMES OF FORMULAS OF ACIDS

An acid is a substance whose molecules yield hydrogen ions (H+) when dissolved in water.

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Acid based on anions whose names end in –ide. Anions whose names end in –ide have he asociated acids that have the hydro- prefix and an –ic ending

ANION CORRESPONDING ACIDS

Cl- (chloride) HCl (hydrochloric acid)

S2- (sulfide) H2S (hydrosulfuric acid)

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2. Anions whose names end in –ate have associated acids with an –ic ending, whereas anions whose names end in –ite have acids with an -ous ending. Prefixes in the name of the anion are retained in the name of the acid.

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slide30
ANION CORRESPONDING ACID

ClO4-perchlorate HClO4 – perchloric acid

ClO3- chlorate HClO3 – chloric acid

ClO2- chlorite HClO2 – chlorous acid

ClO- hypochlorite HClO – hypochloric acid

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exercises2
EXERCISES:

Give the name or formula for the following:

H2SO4

H2CO3

Nitric acid

Phosphoric acid

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slide32

Acknowledgements

  • JISC
  • HEA
  • Centre for Educational Research and Development
  • School of natural and applied sciences
  • School of Journalism
  • SirenFM
  • http://tango.freedesktop.org

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