Question

Assertion :Generally, as the distance between ions increases, the energy of attraction approaches zero and ionic bonding is less favorable Reason: Electrostatic force is inversely proportional to distance between them

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Answer 1

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

The assertion is correct. It states that as the distance between ions increases, the attraction approaches zero.

This is because force between the ion is given by electrostatic force which is $F=\frac{1}{4\pi {\epsilon }_0}\frac{q_1{q}_2}{r^2}$;
$\frac{1}{4\pi {\epsilon }_0}=$ constant

$q_1$ and $q_2$ are charges on ions.

$r=$ separation between charges.

So, $F\propto \frac{1}{r^2}$

As $r$ increases, the force decreases.

So, the reason is also correct and correctly describes the assertion.