Question

Which of the following is correct ? 1)isoelectronic ions have same nuclear charge 2)isoelectronic ions have same neutrons 3)isoelectronic ions have same number of electrons 4)all are correct

Answer 1

Answer:

1. one is correct answer

Answer 2

The correct statement is:

(3) Isoelectronic ions have the same number of electrons.

- Isoelectric species are those which contain the same no of electrons in them.

- For example, Na⁺ and F⁻ both have 10 electrons, so they are isoelectronic.

- Both these ions have different no of neutrons and nuclear charge.

- So, it is clear from the above example that it is not necessary for isoelectronic species to have same nuclear charge or no of neutrons.

- Sp, option (1), (2) and (4) are incorrect.