Periodic Table and Periodicity

Question

The correct order of electron gain enthalpy is :

Accepted Answer

Option B. Oxygen is the second most electronegative element in comparison to fluorine. In group - 16 family …, O-atom is smallest in size. So, electron density on O-atom is very high in group -16
During addition of a free electron to gaseous …-atom,

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Periodic Table and Periodicity

More on Periodic Table and Periodicity