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(a) Cu^2+ ions are coloured but Zn^2+ io...

(a) Cu^2+ ions are coloured but Zn^2+ ions are colourless . Give reason .
(b) Write the formula to calculate spin only magnetic moment .

Text Solution

Verified by Experts

`Cu^2+` are coloured because of presence of unpaired electrons .
`Zn^2+` are colourless because of unpaired electrons .
`mu`=`sqrt(n(n+2)`
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Knowledge Check

  • The complex showing a spin only magnetic moment of 2.82B.M is

    A
    `Ni(CO)_4`
    B
    `[NiCl_4]^2-`
    C
    `Ni(PPh_3)_4`
    D
    `[Ni(CN)_4]^2-`

  • The transition metal ion that has 'spin-only' magnetic moment value of 5.96 is

    A
    `Mn^(2+)`
    B
    `Fe^(2+)`
    C
    `V^(2+)`
    D
    `Cu^(2+)`

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