notes 5 2 ionic bonds
Download
Skip this Video
Download Presentation
Notes 5-2: Ionic Bonds

Loading in 2 Seconds...

play fullscreen
1 / 19

Notes 5-2: Ionic Bonds - PowerPoint PPT Presentation


  • 67 Views
  • Uploaded on

Notes 5-2: Ionic Bonds. -. +. +. -. Chemical Bond. A force of attraction that holds two atoms together Has a significant effect on chemical and physical properties of compounds involves the valence electrons. Valence Electrons – the electrons in the outermost energy level of an atom.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Notes 5-2: Ionic Bonds' - maeko


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
chemical bond
Chemical Bond
  • A force of attraction that holds two atoms together
  • Has a significant effect on chemical and physical properties of compounds
  • involves the valence electrons

Valence Electrons – the electrons in the outermost energy level of an atom

This Lithium

Atom has one

valence electron

counting valence electrons
Counting Valence Electrons

Carbon

4 valence

electrons

Beryllium

2 valence

electrons

Oxygen

6 valence

electrons

how many valence electrons
How Many Valence Electrons?
  • Hydrogen
  • Lead
  • Xenon
  • Sulfur
  • Rubidium

1 Valence

Electron

4 Valence

Electrons

8 Valence

Electrons

6 Valence

Electrons

1 Valence

Electron

the octet rule
The Octet Rule
  • Atoms will combine to form compounds in order to reach eight electrons in their outer energy level.
    • Atoms with less than 4 electrons tend to lose electrons. (Usually metals)
    • Atoms with more than 4 electrons tend to gain electrons. (Usually nonmetals)
  • Be aware that there are some exceptions!

CONSIDER EIGHT A HAPPY NUMBER FOR ATOMS!

the octet rule in action
+

+

+

-

-

-

+

-

-

+

+

+

+

+

-

-

+

+

-

-

-

-

The Octet Rule In Action

6

7

Notice how this chlorine atom has seven valence electrons, one away from eight. It will try to gain one more according to the Octet Rule.

5

4

1

1

2

3

Notice how the sodium atom has one valence electron. It is this electron that it will try to get rid of according to the Octet Rule.

Where do you think Chlorine finds that one electron that it needs?

lewis structure electron dot diagram
Lewis Structure(Electron Dot Diagram)
  • a way of drawing the outer energy level electrons (valence) of an atom
  • The symbol for the element surrounded by as many dots as there are electrons in its outer energy level (valence)
  • Examples

How many valence electrons do each of these atoms have?

oxidation number
Oxidation Number
  • The charge that an atom would have if it lost or gained electrons; ionic charge
  • Can be helpful in determining which atoms will interact or bond with each other
  • Example:

According to electron dot diagram for Magnesium, it has two valence electrons. Because Magnesium is “unhappy” with two, it will typically lose them. If this happens it will turn into a Magnesium ion. At this point it will have an oxidation number of +2.

2+

Mg

what could the oxidation number be
H

O

Ne

Sr

What Could the Oxidation Number Be?

+1 or -1 because it can

gain or lose one electron

-2 because it will

gain two electrons

0 because it will not

gain or lose electrons

+2 because it will

lose two electrons

3 types of chemical bonds
3 Types of Chemical Bonds
  • Ionic
  • Covalent
  • Metallic
ionic bonds
The force of attraction between oppositely charged ions.

Complete transfer of electrons

Usually form between atoms of metals and atoms of non-metals

Resulting compounds have a name that usually ends in –ide

IONIC BONDS

1+

1-

Na

Cl

Which different groups or families

of elements will most-likely

interact to create these types

of bonds?

-

Example - Sodium Chloride (NaCl)

ionic bonding
When an atom of a nonmetal takes one or more electrons from an atom of a metal so both atoms end up with eight valence electrons

IONIC BONDING

ionic bonding1
NONMETAL

METAL

SUBSCRIPTS

IONIC BONDING

IS THE COMPOUND

AN IONIC COMPOUND?

Mg N

3

2

ionic bond formation
IONIC BOND FORMATION

Non-Metal

Metal

Neutral atoms come near each other. Electron(s) are transferred from the Metal atom to the Non-metal atom. They stick together because of electrostatic forces, like magnets.

ionic bonding2
IONIC BONDING

POLYATOMIC IONS--a group of atoms that act like one ion

--usually end in “ate” or “ite”

NH4+1—ammonium ion

CO3-2--carbonate ion

PO4-3--phosphate ion

ionic bonding3
Na SO

4

2

IONIC BONDING

SODIUM SULFATE

groups per 1b
Groups Per 1B
  • Group 1) Corinne, Melissa, Vanessa, Nik, Zane, Arun
  • Group 2) Brian, Macy, Aaron, Cole, Jingjing, Elise
  • Group 3) Vanessa, Gina, Jorge, Genesis, Stephen, Victor
  • Group 4) Brock, Michael, Jack, Brent, Maty, Anthony
  • Group 5) Sophia, Sorayah, Justin, Jazmin, Jackie, Faith
  • Group 6) Emily, Isabella, Sophie, Joe, Cheyenne
groups per 2b
Groups Per 2B
  • Group 1) Chrystian, James, Alissa, Brody, Drew, Victor
  • Group 2) Jason, Garrison, Ian, Jonathan, Zach C, Leslie
  • Group 3) Rachel, Naysha, Fabiola, David, Jarrett, Zach M
  • Group 4) Jake, Amanda, Juliette, Kayleigh, Neal, Andrea
  • Group 5) Horacio, Evelyn, Ryan, Sarina, Abby, Andrew M
  • Group 6) Josh, Holly, Sara, Megan, Lawton
groups per 3b
Groups Per 3B
  • Group 1) Luke, Hector, Chris, Francisco, Carla, Nesly
  • Group 2) AJS, CJ, Grace, Molly, Emma, Robert
  • Group 3) Sammy, Michael, Will, Katia, David, Cole
  • Group 4) Sanjana, Ava, Hanna, Kyle, Austin, Lacey
  • Group 5) Zach, Eric, Julia, Megan, Monetha
  • Group 6) Emily, Kylie, Hope, Saabir, Ariana, Natalie
ad