MCQ
If an atom has electronic configuration $1{s^2}2{s^2}2{p^6}3{s^2}3{p^6}3{d^3}4{s^2},$ it will be placed in
- ASecond group
- BThird group
- ✓Fifth group
- DSixth group
✓
Answer
Correct option: C.
Fifth group
c
The outermost shell and one shell prior to it in $d$ subshell, has total $5$ electron so it will be placed in fifth group in transition element or $' d'$ block of periodic table.
The outermost shell and one shell prior to it in $d$ subshell, has total $5$ electron so it will be placed in fifth group in transition element or $' d'$ block of periodic table.
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