MCQ
The electronic configuration of an element is $1{s^2},\,2{s^2}\,2{p^6},\,3{s^2}\,3{p^3}$. What is the atomic number of the element which is just below the above element in the periodic table
- ✓$33$
- B$34$
- C$31$
- D$49$
✓
Answer
Correct option: A.
$33$
a
$(a)$ $33 - 1{s^2}2{s^2}2{p^6}3{s^2}3{p^3}$
$(a)$ $33 - 1{s^2}2{s^2}2{p^6}3{s^2}3{p^3}$
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