MolSynapsequestion bank

MolSynapse / Question bank / Coordination Compounds / Isomerism: structural and stereoisomerism

JEE Main levelSingle correct optionDifficulty 2 of 3cc143

Which of the following octahedral ions does not show any stereoisomerism?

A $[Co (en) X_{2} Cl X_{2}] X^{+}$
B $[Co (NH X_{3}) X_{4} Cl X_{2}] X^{+}$
C $[Co (en) X_{3}] X^{3 +}$
D $[Co (NH X_{3}) X_{5} Cl] X^{2 +}$

Answer: D

Ma X_{5} b

has a single arrangement.

[Co (NH X_{3}) X_{4} Cl X_{2}] X^{+}

shows cis and trans,

[Co (en) X_{3}] X^{3 +}

is chiral and

[Co (en) X_{2} Cl X_{2}] X^{+}

has cis (chiral) and trans forms. So only

[Co (NH X_{3}) X_{5} Cl] X^{2 +}

has no stereoisomers.

Practice Coordination Compounds More on Isomerism: structural and stereoisomerism

Previous questionNext question

More questions on Isomerism: structural and stereoisomerism