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Assertion : First ionization energy of n...

Assertion : First ionization energy of nitrogen is lower than oxygen
Reason : Across the period effective nuclear charge decreases

A

If both Assertion & Reason are true and the reason is the correct explanation of the assertion

B

If both assertion and reason are true but the reason is not the correct explanation of the assertion

C

If assertion is true statement but reason is false

D

If both assertion and reason are false statements

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