Which of the following is diamagnetic ion? - Vidyadip

MCQ

Which of the following is diamagnetic ion?

✓
$Zn^{2+}$
B
$Ni^{2+}$
C
$Co^{2+}$
D
$Cu^{2+}$

✓

Answer

Correct option: A.

$Zn^{2+}$

$\mathrm{Zn}^{2+}=[\mathrm{Ne}] 3 s^2 3 p^6 4 s^0 3 d^{10}$
It is diamagnetic, so no unpaired $e^-s.$

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