$E A_{1}$ values of the following element has highest values.

I) Be II) Br III) Mg IV) Cl

The correct answer is :

I and III

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II and IV

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I , II and III

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I, II and IV

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Solution

The correct option is C II and IV
The electron affinity of an atom or molecule is defined as the amount of energy released or spent when an electron is added to a neutral atom or molecule in the gaseous state to form a negative ion.

Now $B r$ and $C l$ have positive electron affinity value as if an electron is added to them, they achieve stable full-filled configuration, thus releasing energy.

Hence the correct option is B.

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EA1 values of the following element has highest values.I) Be II) Br III) Mg IV) ClThe correct answer is :

$E A_{1}$ values of the following element has highest values.

I) Be II) Br III) Mg IV) Cl

The correct answer is :