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JEEMAIN-2014
Which of the following molecules has two sigma $\sigma\;$ and two pi $\pi\;$ bonds ?
$(a)\;C_{2}H_{4} \qquad(b)\;N_{2}F_{2} \qquad(c)\;C_{2}H_{2}Cl_{2} \qquad(d)\;HCN$
jeemain
chemistry
2014
set-06
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asked
May 21, 2014
by
yamini.v
edited
May 21, 2014
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