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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.

Identify the incorrect order corresponding to the mentioned property.

Similar Questions

Which of the following represents the correct order of ionization enthalpy?
$(i) Ba < Sr < Ca$
$(ii) S^{2-} < S < S^{2+}$
$(iii) C < O < N$
$(iv) Mg < Al < Si$

Represent different types of periodic properties in the periodic table.

Identify the incorrect set$(s)$ among the following periodic trends:

Which of the following statements is $NOT$ correct?

Which of the following orders is $NOT$ correct with respect to the mentioned properties?

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