Answer:
(i) is
more acidic than
As
we go down the group, electro negativity decreases hence stability of (H?X)
bond decreases. Thus tendency of the (H?X) to release
increase.
Thus,
with weak
(H?S) bond is more acidic than
[1]
(ii)
In
two resonating
structures and in
three
resonating structures are formed. Thus (N?O) bond length in
is
shorter than that in
.
(iii)
Fluorine is the most electronegative element with valency (-1). It stabilises
the metal ion by single bond formation as in
Oxygen
forms multiple bonds with metals and stabilises the compound to a greater
extent.
is stable
due to multiple bonds.
[1]
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