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Coordination Compounds

Question
CBSEENCH12007417

On the basis of the following observations made with aqueous solutions, assign primary and secondary valencies to metals in the following compounds:

Formula

Motes of AgCl precipitated with excess AgNO3

(i) PdCl2.4NH3

2

(ii) NiCl2.6H2O

2

(iii) PtCl4.2HCl

0

(iv) CoCl3.4NH3

1

(v) PtCl2.2NH3

0

.

Solution

(i) Primary 2, secondary 4.
(ii) Primary 2, secondary 6.
(iii) Primary 4, secondary 6.
(iv) Primary 3, secondary 6.
(v) Primary 2, secondary 4.