MCQ
Acetylene molecule has carbon in
- ✓$sp$$-$ hybridisation
- B$s{p^2}$$-$ hybridisation
- C$s{p^3}$$-$ hybridisation
- D$s{p^3}d$$-$ hybridisation
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($A$) $\mathrm{C}_2^{2-}$ is expected to be diamagnetic
($B$) $\mathrm{O}_2{ }^{2+}$ is expected to have a longer bond length than $\mathrm{O}_2$
($C$) $\mathrm{N}_2^{+}$and $\mathrm{N}_2^{-}$have the same bond order
($D$) $\mathrm{He}_2^{+}$has the same energy as two isolated He atoms