MCQ
The number of unpaired electrons in a chromic ion $C{r^{3 + }}$ (atomic number $= 24$) is
- A$6$
- B$4$
- ✓$3$
- D$1$
✓
Answer
Correct option: C.
$3$
c
(c) $C{r_{24}} = (Ar)\,3{d^5}\,4{s^1}$ but $Cr_{24}^{3 + } = (Ar)\,3{d^3}\,4{s^0}$
(c) $C{r_{24}} = (Ar)\,3{d^5}\,4{s^1}$ but $Cr_{24}^{3 + } = (Ar)\,3{d^3}\,4{s^0}$
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