Element having both first and second positive electron gain enthalpies is

O

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N a

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N

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F

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Solution

The correct option is C $N$
Answer (1)
$∙$ First electron gain enthalpy nitrogen is $+ 31 {kJ mol}^{- 1}$ .
$∙$ Second electron gain enthalpy is positive for all elements.

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Element having both first and second positive electron gain enthalpies is

The correct option is C NAnswer (1) ∙ First electron gain enthalpy nitrogen is +31 kJ mol−1. ∙ Second electron gain enthalpy is positive for all elements.

The correct option is C $N$
Answer (1)
$∙$ First electron gain enthalpy nitrogen is $+ 31 {kJ mol}^{- 1}$ .
$∙$ Second electron gain enthalpy is positive for all elements.