A) acetylene contains least number of hydrogen atoms among the possible.
B) acetylene has only one hydrogen atom at each carbon atom
C) acetylene belongs to the class of alkynes with formula\[{{C}_{n}}{{H}_{2\,\,n-2}}\]
D) Sigma electron density of\[C-H\] bond in acetylene is nearer a carbon which has \[50%\,\,S-\]character
Correct Answer: D
Solution :
The acidic character of \[H\]is,\[F-H>O-H>N-H>\equiv \underset{sp}{\mathop{C}}\,-H\]
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