Embibe Experts Solutions for Chapter: Classification of Elements and Periodicity in Properties, Exercise 4: EXERCISE-III (Analytical Questions)

Electronegativity is the measurement of capacity of an atom by which:

The ions ${\mathrm{O}}^{-2}, {\mathrm{F}}^{-}, {\mathrm{Na}}^{+}, {\mathrm{Mg}}^{2+}$ and ${\mathrm{Al}}^{3+}$ are isoelectronic. Their ionic radii show

Ionic radii are

Which of the following $\mathrm{E}.\mathrm{A}.$ order is not correct?

Correct order of acidic strength is :

Assertion: Electron affinity of fluorine is greater than chlorine.

Reason: The ionisation potential of fluorine is less than chlorine.

Assertion: $\mathrm{IP}$ of $\mathrm{F}>\mathrm{EA}$ of $\mathrm{F}$.

Reason: $\mathrm{F}$ is a highly electronegative element.

Assertion: Properties of beryllium is similar to that of aluminium.

Reason: Both the elements belong to the same group.