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Specify the oxidation numbers of metals ...

Specify the oxidation numbers of metals in the following co-ordination entites :
(a) `[Co(H_(2)O)(CN)(en_(2))]^(2+)` (b) `[PtCI_(4)]^(2-)`
(c) `[Cr(NH_(3))_(3)CI_(3)]` (D) `[CoBr_(2)(en)_(2)]^(+)`
(e) `K_(3)[Fe(CN)_(6)]`.

Text Solution

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(i) x+(0)+(-1)+(0)=+2orx=+3 (ii) x-4=-2or x=+2 (iii) x+0+3(-1)=0 or x=+3
(iv) x+2(-1)+0=+1 or x=+3 (v) `[Fe(CN)_(6)]^(3-)`, x+6(-1)=-3 or x=+3
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  17. [Cr(NH3)6]^(3+) is paramagnetic while [Ni(CN)4]^(2-) is diamagnetic. E...

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  18. A solution of [Ni(H(2)O)(6)]^(2+) is green but a solution of [Ni(CN)(4...

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  19. [Fe(CN)(6)]^(4-) and [Fe(H(2)O)(6)]^(2+) are of different colours in d...

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