Which of the following configurations will have the least electron affinity?

ns2np5

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ns2np2

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ns2np3

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ns2np4

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Solution

The correct option is C
ns2np3

Elements with either half-filled or completely filled sub shells have a stable electronic configuration. The elements with stable configurations have less electron affinity or electron gain enthalpy.

$n s^{2} n p^{3}$ $⟶$ 15th group (V A group) has half filled p-subshell.

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Similar questions

Which of the following configuration will have least electron affinity -

x

n s^{2} n p^{3}

z

n s^{2} n p^{4}

I_{x}

I_{z}

n s^{2} n p^{3}

n s^{2} n p^{4}

X = n s^{2} n p^{5}; Y = n s^{2} n p^{3}

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