Ionic bonding: Li O

1
Ionic bonding Li O

• 2Li O? Li2O2 or 4Li O2? 2Li2
  O2

2
Ionic bonding Al Cl
3
Ionic bonding Al Cl

• Al 3Cl? Al3Cl3

4
Covalent bonding

• Thus far we have looked at when atoms bond due to
  the transfer of electrons
• An ionic bond forms when an atom has a greater
  attraction for es than a second atom
• However, if two atoms have approximately the same
  pull on electrons, they share the electrons
  (forming a covalent bond)
• Read Covalent bonding and Covalent bonding
  continued. Do Q7.

5
Covalent bonding

• Q7

CCl4 - Covalent
HCl - Covalent
MgF2 - Ionic
NH3 - Covalent
NaCl - Ionic
H2O - Covalent
H2 - Covalent
OH - Covalent
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6
Multiple bonds

• Do Q. 8. Build models of molecules, O3 as
  challenge (cant build it or ionic)

CO2 - Covalent
Na2O - Ionic
HCl - Covalent
I2 - Covalent
NH3 - Covalent
O2 - Covalent
O3 - Covalent
Al2O3 - Ionic