Which of the following statement(s) is/are in | vedclass

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(D) $1$. The $2^{nd}$ electron gain enthalpy is always endothermic because energy is required to overcome the electrostatic repulsion between the inco

Vedclass · Accepted Answer

None of these are incorrect

Vedclass · Answer

(D) $1$. The $2^{nd}$ electron gain enthalpy is always endothermic because energy is required to overcome the electrostatic repulsion between the incoming electron and the negatively charged anion. Thus,statement $A$ is correct.$2$. Electronegativity is defined as the tendency of an atom in a chemical bond to attract the shared pair of electrons towards itself. It is a property of bonded atoms. Thus,statement $B$ is correct.$3$. $Al_2O_3$ and $BeO$ are well-known amphoteric oxides,meaning they react with both acids and bases. Thus,statement $C$ is correct.$4$. Since all statements $A$,$B$,and $C$ are correct,the statement 'None of these are incorrect' is the correct choice.

Element Description	Element	$\Delta_{i}H_1$	$\Delta_{i}H_2$	$\Delta_{eg}H$
$(i)$ Most reactive non-metal	$(A)$	$419$	$3051$	$-48$
$(ii)$ Most reactive metal	$(B)$	$1681$	$3374$	$-328$
$(iii)$ Least reactive element	$(C)$	$738$	$1451$	$-40$
$(iv)$ Metal forming dihalide	$(D)$	$2372$	$5251$	$+48$

Column-$I$	Column-$II$
$A. Z = 37$	$P. p-$ block
$B. Z = 42$	$Q. f-$ block
$C. Z = 34$	$R. d-$ block
$D. Z = 92$	$S. s-$ block

Which of the following statement$(s)$ is/are incorrect?

Similar Questions

Match the following elements with their respective blocks in the periodic table based on their atomic number $(Z)$:
Column-$I$ Column-$II$
$A. Z = 37$ $P. p-$ block
$B. Z = 42$ $Q. f-$ block
$C. Z = 34$ $R. d-$ block
$D. Z = 92$ $S. s-$ block

Which one of the following sets of ions represents a collection of isoelectronic species?

In which of the following arrangements is the order $NOT$ according to the property indicated in the bracket?

The isoelectronic set of ions is

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