(ii) 
(ii) White
phosphorus is much more reactive than red phosphorus.
(iii) Bleaching
of flowers by 
is permanent while by 
is temporary.
(iv) Nitric
oxide becomes brown when released in air.
(v) 
is ionic in solid state.
(vi) Ammonia is
a good complexing agent
Answer:
(a) Reactions taking place in
contact process for the manufacture of sulphuric acid.
(b)
Hybridization -
Structure - Trigonal bipyramidal Shape
- Distorted F-shape
(c) In 
molecule sulphur is surrounded by six
fluorine atoms and forms octahedral structure. So, 
can
not attack on easily.
(d) (i)
(ii)
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