Chemistry - CHEMICAL BONDING Question with Solution | TestHub

$\mathrm{O}=\underset{\mathrm{s}\mathrm{p}}{\mathrm{C}}=\underset{\mathrm{s}\mathrm{p}}{\mathrm{C}}=\underset{\mathrm{s}\mathrm{p}}{\mathrm{C}}=\mathrm{O}$
There are eight covalent bonds in${\mathrm{C}}_3{\mathrm{O}}_{\mathrm{2,}}$so x = 8 and y = 3 as 3 C-atoms are sp-hybridised.
So x + y = 8 + 3 = 11.