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p Block Elements
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Section:
Chemistry
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© examsnet.com
Question : 60
Total: 60
There are some deposits of nitrates and phosphates in earth’s crust. Nitrates are more soluble in water. Nitrates are difficult to reduce under the laboratory conditions but microbes do it easily. Ammonia forms larger number of complexes with transition metal ions. Hybridisation easily explains the ease of sigma donation capability of
N
H
3
and
P
H
3
. Phosphine is a flammable gas and is prepared from white phosphorus.
Among the following, the correct statement is
[JEE Adv 2008 P1]
between
N
H
3
and
P
H
3
,
N
H
3
is a better electron donor because the lone pair of electrons occupies spherical s orbital and is less directional.
between
N
H
3
and
P
H
3
,
P
H
3
is a better electron donor because the lone pair of electrons occupies
s
p
3
orbital and is more directional.
between
N
H
3
and
P
H
3
,
N
H
3
is a better electron donor because the lone pair of electrons occupies
s
p
3
orbital and is more directional.
between
N
H
3
and
P
H
3
,
P
H
3
is a better electron donor because the lone pair of electrons occupies spherical s orbital and is less directional.
Validate
Solution:
In going from top to bottom in the group, the bond angle decreases due to more p-character in the bond pair and subsequently more s-character in the lone pair orbital.
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