Which of the following exhibit only optical isomerism?

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Solution

Q.
Which of the following exhibit only optical isomerism

(Given that: $e n = N H_{2} C H_{2} C H_{2} N H_{2},$ $g l y = N H_{2} C H_{2} C O O^{-}$ )

1 ${[C o {(e n)}_{3}]}^{3 +}$

2 ${[C o {(N H_{3})}_{4} C l_{2}]}^{+}$

3 $[C r {(g l y)}_{3}]$

4 $[C o {(N H_{3})}_{3} C l_{3}]$

Ans.
(1)

$i)$ ${[C o {(e n)}_{3}]}^{3 +}; O.I (only)$

$i i)$ ${[C o {(N H_{3})}_{4} C l_{2}]}^{+}; G.I (only)$

$i i i)$ $[C r {(g l y)}_{3}]; both O.I and G.I$

$i v)$ $[C o (N H_{3}) C l_{3}]; G.I (fac and mer)$

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