Question
Electronic configuration of some elements is given in Column I and their electron gain enthalpies are given in Column II. Match the electronic configuration with electron gain enthalpy:
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Column (I)
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Column (II)
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Electronic configuration
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Electron gain enthalpy/ kJ $mol^{-1}$
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i.
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$1s^2 2s^2 sp^6$
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A.
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-53
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ii.
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$1s^2 2s^2 2p^6 3s^1$
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B.
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-328
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iii.
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$1s^2 2s^2 2p^5$
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C.
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-141
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iv.
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$1s^2 2s^2 2p^4$
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D.
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+48
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