MCQ
Highest ionisation energy stands for
- ✓$He$
- B$C$
- C$N$
- D$H$
✓
Answer
Correct option: A.
$He$
a
(a) $He$ has highest ionisation energy due to it full fill $1s$-orbital.
(a) $He$ has highest ionisation energy due to it full fill $1s$-orbital.
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