pBlock ElementsII - Result Question 128
####13. Which of the following properties is not shown by NO?
(a) It is paramagnetic in liquid state
(2014 Main)
(b) It is a neutral oxide
(c) It combines with oxygen to form nitrogen dioxide
(d) Its bond order is 2.5
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Solution:
- NO is paramagnetic in gaseous state because in gaseous state, it has one unpaired electron.
Total number of electrons present $=7+8=15 e^{-}$
Hence, there must be the presence of unpaired electron in gaseous state while in liquid state, it dimerises due to unpaired electron.
