1.

Acetylene molecules contain [DCE 1999]

A. 5\[\sigma \] bond
B. 4\[\sigma \] bond and \[1\pi \] bond
C. 3\[\sigma \] and 2\[\pi \]
D. 3\[\sigma \]  and 3\[\pi \]
Answer» D. 3\[\sigma \]  and 3\[\pi \]


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