Multiple choice

Regarding the two complexes - (A) - [Ni(H2O)6]++ and (B) - [Ni(NH3)6]++, which of the following statement is correct?

  1. Complex (A) is diamagnetic and complex (B) is paramagnetic

  2. Complex (A) is paramagnetic and (B) is diamagnetic.

  3. Both paramagnetic

  4. Both are diamagnetic

  5. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This option is correct,  because in the both complexes ion Ni(28) is present as Ni++ ions. The Ni atom has valence shell configuration 3d84s2 but Ni++ ions indicate 3d8configuration. The magnetic measurement is complex of the ions paramagnetic it has two unpaired electron. They act as high spin in nature  and it gives rise to sp3d2 hybridization.

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