Question

Which of the following is/are correct :-

• A. Carbon-carbon bond length in $Ca{C}_2$ will be more than that in $C{H}_{2}CC{H}_2$
• B. $O-O$ bond length in $K{O}_2$ is more than that in $N{a}_2{O}_2$
• C. $O-O$ bond length in $Ba{O}_2$ will be more than that in $K{O}_2$
• D. $N-O$ bond length in $NO$ gaseous molecule is equal to bond length in $NOCl$ gaseous molecule

Answer 1

Answer: (C)

(i) In $Ca{C}_2\to C{a}^{+2}{C}_2^{-2}\left[-C\equiv C^{-}\right]$(Triple bond)
In $C{H}_{2}CC{H}_2\to H_{2}C=C=C{H}_2$ (double bond)
(ii) $InK{O}_2\to O_2^{-}$ bond order $=1.5$
In $Na,O_2\to O_2^{-2}$ bond order $=1$
(iii) In $O,\left[Pt{F}_s\right]\to O^{+2}$ bond order $=1$
$InK{O}_2\to O_2^{-}$ bond order $=1.5$
(iv) In $NO\to$ bond order $=2.5$
In $NOCl\to N{O}^{+}$ bond order $=2$