Sign In

JEE MAIN - Chemistry (2024 - 4th April Evening Shift - No. 8)

Given below are two statements :

Statement I : The correct order of first ionization enthalpy values of $$\mathrm{Li}, \mathrm{Na}, \mathrm{F}$$ and $$\mathrm{Cl}$$ is $$\mathrm{Na}<\mathrm{Li}<\mathrm{Cl}<\mathrm{F}$$.

Statement II : The correct order of negative electron gain enthalpy values of $$\mathrm{Li}, \mathrm{Na}, \mathrm{F}$$ and $$\mathrm{Cl}$$ is $$\mathrm{Na}<\mathrm{Li}<\mathrm{F}<\mathrm{Cl}$$

In the light of the above statements, choose the correct answer from the options given below :

Statement I is true but Statement II is false
Both Statement I and Statement II are false
Statement I is false but Statement II is true
Both Statement I and Statement II are true

Explanation

First ionization enthalpy of $$\mathrm{F}>\mathrm{Cl}$$ as first IE decreases down the group.

Similarly, first IE of $$\mathrm{Li}>\mathrm{Na}$$.

So, statement-I is correct.

Electron gain enthalpy of given elements are negative. Considering the magnitude the given order is correct.

Thus, statement-II is correct

Comments (0)

Advertisement