A) \[{{H}_{2}}\]molecule has\[1\sigma \]bond
B) \[HCl\]molecule has\[1\sigma \]bond
C) Water molecule has\[2\sigma \]bonds and two lone pairs
D) Ethylene molecule has\[5\sigma \]bonds and In bond
E) Acetylene molecule has\[3\pi \]bonds and\[3\sigma \] bonds
Correct Answer: E
Solution :
Acetylene molecule has\[3\sigma \]bonds and\[2\pi \] bonds. \[H\overset{\sigma }{\mathop{-}}\,C\underset{2\pi }{\overset{\sigma }{\mathop{\equiv }}}\,C\overset{\sigma }{\mathop{-}}\,H\]
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