pBlock ElementsII - Result Question 15
####15. Which of the following is the wrong statement? (2013 Main) (a) $ONCl$ and $ONO^{-}$are not isoelectronic
(b) $O _3$ molecule is bent
(c) Ozone is violet-black in solid state
(d) Ozone is diamagnetic gas
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Solution:
- (a) $ONCl=8+7+17=32 e^{-}$
$ONO^{-}=8+7+8+1=24 e^{-}$(correct)
(b)
Central O-atom is $s p^{2}$-hybridised with 1 lone pair, so bent shape (correct).
(c) In solid state, ozone is violet-black. Ozone does not exist in solid state, thus incorrect.
(d) $O _3$ has no unpaired electrons, so diamagnetic (correct). Hence, (c) is the correct.
