Period 3 Elements
Period 3 Elements
Period 3 Elements
Atomic Properties
Electronic structures
Na [Ne] 3s1
M
[Ne] 3s2
g
Al [Ne] 3s2 3px1
Si [Ne] 3s2 3px1 3py1
[Ne]
P
3s2 3px1 3py1 3pz1
[Ne]
S
3s2 3px2 3py1 3pz1
[Ne]
Cl
3s2 3px2 3py2 3pz1
[Ne]
Ar
3s2 3px2 3py2 3pz2
In each case, [Ne] represents the complete electronic
structure of a neon atom.
Atomic radius
The trend
The trend
Silicon
Sulphur
Chlorine
Argon
Sodium
Magnesium
Aluminium
Silicon
Chlorine
Sodium
Magnesium
Aluminium
Silicon
Phosphorus
Sulphur
Sodium
Aluminium
Silicon
Phosphorus
The oxides
Electrical conductivity
The structures
The structure
Electrical conductivity
Phosphorus(III) oxide
Phosphorus(V) oxide
Sulphur dioxide
Chlorine(I) oxide
Chlorine(VII) oxide
The oxides
Sodium oxide
Magnesium oxide
Aluminium oxide
Phosphorus(III) oxide
Phosphorus(V) oxide
Sulphur dioxide
Sulphur trioxide
Chlorine(VII) oxide
Chlorine(I) oxide
The chlorides
PCl
3
The structures
Summary
Aluminium hydroxide
Aluminium hydroxide
Aluminium hydroxide is amphoteric.