MCQ
Element having highest $I.P.$ value is
- A$Ne$
- ✓$He$
- C$Be$
- D$N$
✓
Answer
Correct option: B.
$He$
b
The electronic configuration of the given element is:
The electronic configuration of the given element is:
$Ne :[ He ] 2 s ^2\,2 p ^6$
$He : 1 s ^2$
$Be: 1 s ^2 \,2 s ^2$
$N :[ He ] 2 s ^2 \,2 p ^3$
Although $Ne, He$ and $N$ all have fully filled stable configuration but the electron is to be removed from a is shell in case of $He.$ $1s$ shell being closest to the nucleus makes quite tough to remove an electron from it. Thus, the element having the highest $I.P.$ value is Helium.
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