Which of the following statements is incorrec | vedclass

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(C) $1$. $IP_1$ is the energy required to remove the first electron,and $IP_2$ is the energy required to remove the second electron. Since removing an

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The number of elements in any period is half the number of orbitals available in the corresponding shells.

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(C) $1$. $IP_1$ is the energy required to remove the first electron,and $IP_2$ is the energy required to remove the second electron. Since removing an electron from a cation is harder than from a neutral atom,$IP_2 > IP_1$. Thus,statement $A$ is correct.$2$. For $N$ $(2s^2 2p^3)$ and $O$ $(2s^2 2p^4)$,$IP_1$ order is $N > O$ due to stable half-filled $p$-orbitals. For $IP_2$,the order changes because $O^+$ $(2s^2 2p^3)$ becomes more stable than $N^+$ $(2s^2 2p^2)$. Thus,statement $B$ is correct.$3$. The number of elements in a period is equal to the number of electrons that can be accommodated in the orbitals being filled,which is exactly equal to the number of orbitals multiplied by $2$. The statement says it is half,which is incorrect.$4$. By definition,the ionization potential of an anion $(Cl^-)$ is equal to the electron affinity of the corresponding neutral atom $(Cl)$. Thus,statement $D$ is correct.

Column-$I$	Column-$II$
$A$. Ionisation potential	$P$. $O < F < N$
$B$. Electronegativity	$Q$. $N < O < F$
$C$. $Z_{eff}$	$R$. $O < N < F$
$D$. Electron affinity	$S$. $N < C < O$

Which of the following statements is incorrect?

Similar Questions

Which of the following statements is correct?

Which of the following pairs shows a diagonal relationship?

Match the following columns:

Column-$I$ Column-$II$

$A$. Ionisation potential $P$. $O < F < N$

$B$. Electronegativity $Q$. $N < O < F$

$C$. $Z_{eff}$ $R$. $O < N < F$

$D$. Electron affinity $S$. $N < C < O$

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