Home Chemistry Classification of Elements and Periodicity Ionisation Energy Which of the following has lowest first ioni…
Chemistry Classification of Elements and Periodicity Ionisation Energy Single Correct MCQ
Published on: August 11, 2026

Which of the following has lowest first ionisation potential

A
B
B
C
C
N
D
O

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The correct answer is:
A

Ionisation potential increases across the period.

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