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Physical Science 1000 Bonding

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Page 1: Physical Science 1000 Bonding. Counting Electrons Total Electrons and Valence Electrons Valence Electrons – number of electrons in the outer shell of

Physical Science 1000

Bonding

Page 2: Physical Science 1000 Bonding. Counting Electrons Total Electrons and Valence Electrons Valence Electrons – number of electrons in the outer shell of

Counting Electrons

Total Electrons and Valence Electrons

Valence Electrons – number of electrons in the outer shell of an atom

The valence Electrons are the only ones used in Bonding

Hey, ….. That number matches the group number on my periodic table in a way!!!!

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Page 3: Physical Science 1000 Bonding. Counting Electrons Total Electrons and Valence Electrons Valence Electrons – number of electrons in the outer shell of

Valence Electrons

1 valence e-

2 valence e-

3 va

lenc

e e-

4 va

lenc

e e-

5 va

lenc

e e-

6 va

lenc

e e-

7 va

lenc

e e-

8 va

lenc

e e-

Page 4: Physical Science 1000 Bonding. Counting Electrons Total Electrons and Valence Electrons Valence Electrons – number of electrons in the outer shell of

Noble Gases

• Elements in group 8 on the periodic table

• Each has 8 electrons in its outer shell

• Each is very stable – they don’t react

Page 5: Physical Science 1000 Bonding. Counting Electrons Total Electrons and Valence Electrons Valence Electrons – number of electrons in the outer shell of

....Se Mg. .. .Na . ...

Cl: .. ..

Page 6: Physical Science 1000 Bonding. Counting Electrons Total Electrons and Valence Electrons Valence Electrons – number of electrons in the outer shell of

..Na . ...

Cl: ..+ Na+ -...Cl: ..

..

Page 7: Physical Science 1000 Bonding. Counting Electrons Total Electrons and Valence Electrons Valence Electrons – number of electrons in the outer shell of

Ionic Bond

bond formed by the giving or

taking of electrons

Page 8: Physical Science 1000 Bonding. Counting Electrons Total Electrons and Valence Electrons Valence Electrons – number of electrons in the outer shell of

Al3+

+ O2- Al2O3

Mg2+

Cl MgCl2+

Na+

N3+

NaN3+

Page 9: Physical Science 1000 Bonding. Counting Electrons Total Electrons and Valence Electrons Valence Electrons – number of electrons in the outer shell of

Properties of Ionic Compounds

Formed from a metal and a non metal

Most are soluble in water

Form crystalline lattices

Page 10: Physical Science 1000 Bonding. Counting Electrons Total Electrons and Valence Electrons Valence Electrons – number of electrons in the outer shell of

Covalent Bond

bond formed by the Sharing

of electrons

Page 11: Physical Science 1000 Bonding. Counting Electrons Total Electrons and Valence Electrons Valence Electrons – number of electrons in the outer shell of

Properties of Covalent Compounds

Formed by two nonmetals

Solubility varies

The strongest bond

Page 12: Physical Science 1000 Bonding. Counting Electrons Total Electrons and Valence Electrons Valence Electrons – number of electrons in the outer shell of

Br..: ...Br.. :...

+ Br..: ...Br.. :...

bonding pair

nonbonding pairs

Page 13: Physical Science 1000 Bonding. Counting Electrons Total Electrons and Valence Electrons Valence Electrons – number of electrons in the outer shell of

Polar Covalent Bond

Bond formed with the unequal sharing of electrons due to one atom being more electronegative

Electrongeativity -The attraction an atom has for a pair of shared electrons

S+

S-S-

Page 14: Physical Science 1000 Bonding. Counting Electrons Total Electrons and Valence Electrons Valence Electrons – number of electrons in the outer shell of

More Electronegative

Page 15: Physical Science 1000 Bonding. Counting Electrons Total Electrons and Valence Electrons Valence Electrons – number of electrons in the outer shell of

Ionic bond

Covalent bondPolar Covalent bond


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