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Multiple choice

Which of the following metal aquo complexes has the maximum number of unpaired electrons?

  1. [Ti(H2O)6]3+

  2. [Cr(H2O)6]2+

  3. [Fe(H2O)6]3+

  4. [Ni(H2O)6]2+

  5. [Cu(H2O)6]2+

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

[Fe(H2O)6]3+: (t2g)3(eg)2 has five unpaired electrons.

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