MCQ
How many unpaired electrons are present in cobalt $[Co]$ metal
- A$2$
- ✓$3$
- C$4$
- D$7$
✓
Answer
Correct option: B.
$3$
b
(b) $C{o_{27}} = [Ar]\,\,3{d^7}4{s^2}$
(b) $C{o_{27}} = [Ar]\,\,3{d^7}4{s^2}$
$3$ unpaired electron are present in cobalt metal.
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