From the following elements,which of them has | vedclass

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Question

(D) The second ionisation potential $(IE_2)$ corresponds to the energy required to remove an electron from a unipositive ion $(M^+ \rightarrow M^{2+}

Vedclass · Accepted Answer

$F$

Vedclass · Answer

(D) The second ionisation potential $(IE_2)$ corresponds to the energy required to remove an electron from a unipositive ion $(M^+ \rightarrow M^{2+} + e^-)$.Electronic configurations of the elements:$C (Z=6): 1s^2 2s^2 2p^2 \rightarrow C^+: 1s^2 2s^2 2p^1$$N (Z=7): 1s^2 2s^2 2p^3 \rightarrow N^+: 1s^2 2s^2 2p^2$$O (Z=8): 1s^2 2s^2 2p^4 \rightarrow O^+: 1s^2 2s^2 2p^3$$F (Z=9): 1s^2 2s^2 2p^5 \rightarrow F^+: 1s^2 2s^2 2p^4$Among these,$N^+$ has a stable half-filled $2p^2$ configuration,but $O^+$ has a $2p^3$ configuration which is half-filled and exceptionally stable.However,the second ionisation potential generally increases across a period due to increasing effective nuclear charge.Comparing $N^+$ and $O^+$,the removal of an electron from $N^+$ $(2p^2)$ is easier than from $O^+$ $(2p^3)$.Comparing $O^+$ and $F^+$,$F^+$ has a higher effective nuclear charge than $O^+$,making it harder to remove an electron from $F^+$.Thus,$F$ has the highest second ionisation potential among the given options.

From the following elements,which of them has the highest second ionisation potential?

Similar Questions

The correct order of first ionization enthalpy values of the following elements is:
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Choose the correct answer from the options given below:

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Which of the following electronic configurations has the highest ionization enthalpy?

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