Question

Assertion: Among isoelectronic species, the cation with the greater positive charge will have a smaller radius Reason: Greater the attraction of the electrons to the nucleus, smaller is the size of atom/ion

Answer 1

Explanation:

Given -

1. Assertion: Among isoelectronic species, the cation with the greater positive charge will have a smaller radius
2. Reason: Greater the attraction of the electrons to the nucleus, smaller is the size of atom/ion

To Find -

• Which Option is correct ?

As we know that :-

• Isoelectronic species are those species in which number of electrons are same.

And

Cation with a greater positive charge with have a smaller radius because we know that in cation there's lack of electron. So, It contain positive charge and due to lack of electron it is smaller radius.

Hence,

Assertion is correct.

Reason :-

Greater the attraction of electrons to the nucleus, smaller is the size of atom/ion.

Here, If the attraction is more towards nucleus then atom/ion size start shrinking and leds to smaller size. Cation have smaller size because attraction of electrons towards nucleus is more.

Hence,

Reason is also correct.

Therefore,

Assertion and Reason Both are correct and Reason is correct Explaination of assertion.