Select the incorrect order of electronegativi | vedclass

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(B) Electronegativity $(EN)$ of an atom increases with an increase in the oxidation state of the atom because the effective nuclear charge increases.I

Vedclass · Accepted Answer

$CH_4$ ($EN$ of $C$ atom) > $CO_2$ ($EN$ of $C$ atom)

Vedclass · Answer

(B) Electronegativity $(EN)$ of an atom increases with an increase in the oxidation state of the atom because the effective nuclear charge increases.In $N_2O_5$,the oxidation state of $N$ is $+5$,while in $NO_2$,it is $+4$. Thus,$EN$ of $N$ in $N_2O_5 > NO_2$ is correct.In $CH_4$,the oxidation state of $C$ is $-4$,while in $CO_2$,it is $+4$. Thus,$EN$ of $C$ in $CO_2 > CH_4$. Therefore,the order $CH_4 > CO_2$ is incorrect.For $Cu^{2+}$ and $Cu^+$,the higher positive charge leads to higher $EN$,so $Cu^{2+} > Cu^+$ is correct.Bond polarity depends on the difference in electronegativity. The difference between $P$ and $F$ is greater than the difference between $O$ and $F$,making $P-F$ more polar than $O-F$.

Select the incorrect order of electronegativity of the element.

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