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Question
Chemistry
Which of the following order of basic strength is correct?
Q. Which of the following order of basic strength is correct?
1680
253
AIIMS
AIIMS 2001
The p-Block Elements - Part2
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A
N
H
3
<
N
H
2
O
H
<
H
N
3
<
N
H
2
−
N
H
2
29%
B
N
H
2
O
H
<
H
N
3
<
N
H
2
−
N
H
2
<
N
H
3
29%
C
H
N
3
<
N
H
3
<
N
H
2
O
H
<
N
H
2
−
H
2
18%
D
H
N
3
<
N
H
2
O
H
<
N
H
2
−
N
H
2
<
N
H
3
24%
Solution:
Basicity in nitrogen compounds is attributed to the availability of lone pair of electrons. The order of availability of
e
−
pair on
N
-atom is
N
H
3
>
N
H
2
−
N
H
2
>
H
N
3
>
N
H
2
O
H
Therefore, same is the order of basicity of these compounds.