Periodic Classification And Periodic Properties Ques 19
19. The element with the highest first ionisation potential is
(a) boron
(b) carbon
(c) nitrogen
(d) oxygen
$(1982,1 \mathrm{M})$
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Answer:
Correct Answer: 19.$(\mathrm{a}, \mathrm{b})$
Solution:
- Nitrogen has highest ionisation potential due to exceptional stability of its valence shell configuration mentioned in question 21 .