pBlock ElementsII - Result Question 130

####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:

  1. (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.



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