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Ionisation Energy

Which of the ...

Question

Which of the following has 2nd I.P. < 1st I.P.?

M g

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N e

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C

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None of these

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Solution

The correct option is D None of these
$(I . P >)_{2} > (I . P >)_{1}$ always as in case of $I . P ._{2}$ . Electron is removed from cation in which $Z_{e f f}$ has increased for the last electron.

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Similar questions

2^{n d}

<

1^{s t}

Correct orders of $1 s t$ I.P. are -

(i) Li < B < Be < C

(ii) O < N < F

(iii) Be < N < Ne

1^{s t}

O_{(g)}

O_{(g)}^{-}

N e_{(g)}

N e_{(g)}^{+}

O_{(g)}^{+}

O_{(g)}

N_{(g)}

N_{(g)}^{+}

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