From the following elements,which of them has | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

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

If first ionization enthalpies of element $X$ and $Y$ are $419 \ kJ \ mol^{-1}$ and $590 \ kJ \ mol^{-1}$,respectively and second ionization enthalpies of $X$ and $Y$ are $3069 \ kJ \ mol^{-1}$ and $1145 \ kJ \ mol^{-1}$,respectively. Then the correct statement is :-

Discuss and compare the trend in ionisation enthalpy of the elements of group-$1$ with those of group-$17$ elements.

The graph shows the variation of Ionization Potential $(I.P.)$ with Atomic Number $(At. No.)$ for elements $A$ to $E$. If these elements belong to the same group in the periodic table,identify the group.

The first ionization enthalpy of $O$ is less than that of $N$,because .........

The correct order of first ionisation enthalpy of group-$13$ elements is

Vedclass Test Series

Exam Paper Generator

Online Exam Module