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Chemistry
Which of the following order of basic strength is correct?
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Q. Which of the following order of basic strength is correct?
AIIMS
AIIMS 2001
The p-Block Elements - Part2
A
$NH_3 < NH_2 OH < HN_3 < NH_2-NH_2$
29%
B
$NH_2 OH < HN_3 < NH_2-NH_2 < NH_3$
29%
C
$HN_3 < NH_3 < NH_2 OH < NH_2 -H_2$
18%
D
$HN_3 < NH_2 OH < NH_2-NH_2 < NH_3$
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
$NH_3 > NH_2 -NH_2 > HN_3 > NH_2OH$
Therefore, same is the order of basicity of these compounds.