Coordination Compounds 1 Question 21
Passage
The coordination number of $\mathrm{Ni}^{2+}$ is $4$ .
$ \mathrm{NiCl}_2+\mathrm{KCN} \text { (excess) } \longrightarrow A \text { (cyano complex) } $
$ \mathrm{NiCl}_2+\text { conc. } \mathrm{HCl} \text { (excess) } \longrightarrow B \text { (chloro complex) } $
21. The IUPAC name of $A$ and $B$ are
(2006,34 M=12 M)
(a) potassium tetracyanonickelate (II), potassium tetrachloronickelate (II)
(b) tetracyanopotassiumnickelate (II), tetrachloropotassiumnickelate (II)
(c) tetracyanonickel (II), tetrachloronickel (II)
(d) potassium tetracyanonickel (II), potassium tetrachloronickel (II)
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Answer:
Correct Answer: 21. (a)
Solution:
- $A=K _2\left[Ni(CN) _4\right] ; \quad B=K _2\left[NiCl _4\right]$
$A$ : Potassium tetracyanonickelate (II)
$B$ : Potassium tetrachloronickelate (II)