Which of the following molecules has two sigma (\(\sigma\)) and two pi (\(\pi\)) bonds?
Show Hint
- \(\mathrm{C_2H_4}\)
- \(\mathrm{N_2F_2}\)
- \(\mathrm{C_2H_2Cl_2}\)
- \(\mathrm{HCN}\)
The Correct Option is D
Solution and Explanation
For the others: C2H4 has 5 sigma and 1 pi; N2F2 (F-N=N-F) has 3 sigma and 1 pi; C2H2Cl2 (e.g. ClHC=CHCl) has 5 sigma and 1 pi.
Only HCN matches.
Answer: (4) \(\mathrm{HCN}\)
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