Which of the following statements is NOT corr | vedclass

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(D) $1$. $He$ has the highest first ionization enthalpy $(\Delta_iH_1)$ among all elements due to its stable electronic configuration and small size.

Vedclass · Accepted Answer

The $\Delta_iH_1$ value for nitrogen is lower than that of oxygen.

Vedclass · Answer

(D) $1$. $He$ has the highest first ionization enthalpy $(\Delta_iH_1)$ among all elements due to its stable electronic configuration and small size. (Statement $A$ is correct.)$2$. Noble gases have completely filled valence shells,so they do not accept electrons easily,resulting in zero or positive electron gain enthalpy $(\Delta_{eg}H_1)$. (Statement $B$ is correct.)$3$. Fluorine is the most electronegative element in the periodic table. (Statement $C$ is correct.)$4$. Nitrogen $(1s^2 2s^2 2p^3)$ has a half-filled $p$-orbital,which is more stable than the electronic configuration of oxygen $(1s^2 2s^2 2p^4)$. Therefore,the $\Delta_iH_1$ of nitrogen is higher than that of oxygen. (Statement $D$ is incorrect.)

List-$I$ (Elements)	List-$II$ (Properties)
$A. Cl, S$	$I. \text{Elements with highest electronegativity}$
$B. Ge, As$	$II. \text{Elements with largest atomic size}$
$C. Fr, Ra$	$III. \text{Elements which show properties of both metals and non-metals}$
$D. F, O$	$IV. \text{Elements with highest negative electron gain enthalpy}$

Which of the following statements is $NOT$ correct?

Similar Questions

Which of the following is the correct order of $I.E.$ (Ionization Energy)?

The set of elements that differ in mutual relationship from those of the other sets is:

Fill in the blanks given below:
$(i)$ The most widely used scale for measuring electronegativity is ........ .
$(ii)$ The similarity observed in periodic properties is known as .............. .
$(iii)$ The elements located in the middle of the periodic table form .......... type of oxides.

In which of the following arrangements is the order $NOT$ according to the property indicated against it?

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