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(D) Let us analyze the given options for the incorrect order:$A$. $Al_2O_3$ (amphoteric) < $MgO$ (basic) < $Na_2O$ (strongly basic) < $K_2O$ (more str

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$Li < Be < B < C$ : First ionisation enthalpy

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(D) Let us analyze the given options for the incorrect order:$A$. $Al_2O_3$ (amphoteric) $B$. In a group,acidity increases down the group as the bond dissociation energy decreases. Thus,$NH_3 $C$. Ionic radius increases down a group due to the addition of new shells. Thus,$Li^{+} $D$. The first ionisation enthalpy generally increases from left to right in a period. However,$Be$ $(2s^2)$ has a higher ionisation enthalpy than $B$ $(2s^2 2p^1)$ due to the stability of the fully filled $s$-orbital. The correct order is $Li < B < Be < C$. Therefore,the order $Li < Be < B < C$ is incorrect.

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	$S$. $N < C < O$

Identify the incorrect order corresponding to the mentioned property.

Similar Questions

Which of the following represents the correct order?

Based on the provided image,identify the correct option for the elements $A, B, C, D, E$ given that $C$ has the electronic configuration $[Xe] \ 6s^2 \ 5d^1$.

Which elements in groups $1$ to $17$ differ in many respects from the other elements of their respective groups?

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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