Chemistry · Classification of Elements and Periodicity in Properties
The correct order of first ionisation enthalpy values for the elements of the second period is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1B < Be < C < N < O
- 2Be < B < C < N < O
- 3Be < B < N < C < O
- 4B < Be < C < O < N✓
Correct answer
B < Be < C < O < N
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