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Which of the following is arranged in or...

Which of the following is arranged in order of increasing stability of the metal complexes ? (Oxidation states are given in parentheses).

A

`Pt(+2) gt Co(+3) lt Ag(+1) lt Cr(+3)`

B

`Cr(+3) lt Pt(+2) lt Ag(+1) lt Co(+3)`

C

`Co(+3) lt Cr(+3) lt Pt(+2) lt Ag(+1)`

D

`Ag(+1) lt Pt(+2) lt Cr(+3) lt Co(+3)`

Text Solution

Verified by Experts

The correct Answer is:
D
`Co(+3)` forms more complexes than any other element. `Co(+3)` complexes are produced easily in contrast to the difficulty in preparing compounds with simple `Co^(3+)` ions.
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