The correct order of electron gain enthalpy is

Question:

The correct order of electron gain enthalpy is

  1. $\mathrm{S}>\mathrm{Se}>\mathrm{Te}>\mathrm{O}$

  2. $\mathrm{Te}>\mathrm{Se}>\mathrm{S}>\mathrm{O}$

  3. $\mathrm{O}>\mathrm{S}>\mathrm{Se}>\mathrm{Te}$

  4. $\mathrm{S}>\mathrm{O}>\mathrm{Se}>\mathrm{Te}$


Correct Option: 1

Solution:

correct order of electron gain enthalpy is :-

$\mathrm{O}<\mathrm{S}>\mathrm{Se}>\mathrm{Te}$

$\Rightarrow \mathrm{S}>\mathrm{Se}>\mathrm{Te}>\mathrm{O}$

(Oxygen shows least electron gain enthalpy due to small size of atom)

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