Why does nitrogen have positive electron gain enthalpy whereas oxygen has negative? However, oxygen has lower ionisation enthalpy than nitrogen. Explain.

Question

Why does nitrogen have positive electron gain enthalpy whereas oxygen has negative? However, oxygen has lower ionisation enthalpy than nitrogen. Explain., Nitrogen's stable half-filled p-orbital (2p³) resists the addition of extra electrons, resulting in positive electron gain enthalpy., Oxygen, with a 2p³ configuration, achieves stability by removing one electron, leading to a negative electron gain enthalpy., Nitrogen's higher ionisation enthalpy makes it less favourable to lose electrons compared to oxygen., Oxygen's smaller atomic size allows for easier removal of electrons, resulting in a negative electron gain enthalpy.

MARKS App · Accepted Answer

Correct Option is : (A) Nitrogen's stable half-filled p-orbital (2p³) resists the addition of extra electrons, resulting in positive electron gain enthalpy.

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