A) 4
B) 2
C) 8
D) 16
Correct Answer: A
Solution :
\[\underset{l-bromo-2-methyl\text{ }cyclobutane}{\mathop{{{H}_{2}}\overset{\begin{smallmatrix} {{H}_{2}}C- \\ | \end{smallmatrix}}{\mathop{C}}\,{{-}_{1}}\overset{\begin{smallmatrix} _{2}\overset{\begin{smallmatrix} H \\ | \end{smallmatrix}}{\mathop{{{C}^{*}}}}\,-C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{\underset{\begin{smallmatrix} | \\ H \end{smallmatrix}}{\mathop{{{C}^{*}}}}\,-Br}}\,}}\,\] * represents asymmetric carbon atom. No. of asymmetric carbon atom \[=\text{(}n\text{)}=2\] \[\therefore \] Total number of optical isomers \[={{2}^{n}}\] \[={{2}^{2}}=4\]
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