CBSE Class 12 Chemistry 2023 Delhi Set 1 Solved Paper

Question : 21

Total: 35

(a) Which of the following species cannot act as a ligand? Give reason.
OH−,NH4+,CH3 NH2 H2O
(b) The complex [Co(NH3)5(NO2)]Cl2 is red in colour. Give IUPAC name of its linkage isomer.

Solution: 👈: Video Solution

(a) NH4+(Ammonium ion) can not act as ligand Ligand donate electron to central atom or they can have lone pair of electron to donate and form bond between ligand and central atom. But NH4‌+do not have lone pair of electron to donate.
(b) Complex [Co(NH3)5(NO2)]Cl2 is Red in colour when it is present in hydrated form. It absorb moisture and turn into Red colour.
It is showing linkage isomerism-

[CO(NH3)5(NO2)]Cl2

Pentaamine‌N−nitro‌cobalt(III)‌Chloride

⇌

[CO(NH3)5(ONO)]Cl2

Penta amine o-nitro cobalt (III) Chloride

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