MCQ
An atom with atomic number $21$ belongs to the category of
- A$s$-block elements
- B$p$-block elements
- ✓$d$-block elements
- D$f$-block elements
✓
Answer
Correct option: C.
$d$-block elements
c
$(c) d$-block - $[Ar]\,3{d^1}4{s^2}$
$(c) d$-block - $[Ar]\,3{d^1}4{s^2}$
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