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Summary Edexcel A Level Chemistry - Unit 2: Bonding and Structure notes
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, Ionic BondingIonic
Bonding : The Strong elec trostatic fo r c e of attraction b e t we e n oppositely
charged ions .
Fac tors affecting ionic bonding : The ionic charge
-
the greater the charges , the
stronger the
bonding ( m o re is needed to ove rc o m e ).
energy
The ionic radius -
The smaller the ions ,
the m o re
is
closely the ions can pack together) m o re
energy
needed
to ove rc o m e ).
:.
Generally the smaller the ion and the higher the charge,
the stronger the electrostatic attraction .
Cations-formed when e l e c t ro n s a re lost
Al3
+
e .
.
g Na - Nat + e-
,
Al >
- + 3
Anion -
fo r m e d when e l e c t ro n s a re
gained
e .
g .
Cl + e
-
> C
,
0 + 2 > 02
Electron configuration : Dot and c ro s s
e Nazo (Sodium oxide
.
.
g
XX 00 XX
Nat
o
X 0 X
X
02- 0 X
Nat
X
X
XX XX XX
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