(ii) Basic
properties of
and 
Answer:
(i) Structure of oxides of
nitrogen
(a)
(b) Structure
of oxides of phosphorus (i) 
(ii)
.
(ii) Chlorine
shows higher electron affinity than fluorine because fluorine atoms have higher
inter electronic repulsion and low bond dissociation enthalpy.
(iii) Oxygen
shows maximum covalency 4 whereas sulphur shows maximum covalency 6 because in
oxygen, d- orbital is absent but in sulphur d-orbital is present.
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