Multiple choice

The zero magnetic moment of octahedral complexes K2NiF6 is due to

  1. low spin 3d6 Ni (IV) complex

  2. low spin 3d8 Ni(II) complex

  3. high spin 3d8 Ni(II) complex

  4. high spin 3d6 Ni (IV) complex

  5. none of these
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A Correct answer
Explanation

This option is correct because the K2NiF6 shows the high spin character but actually cannot exhibit zero magnetic moment. Hence, these complexes behave as low spin in nature, the electrons are distributed in 6t2g and 0eg due to distribution of electron. No unpaired electron occur, i.e. magnetic moment is zero in low spin.

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