Question

Assertion : Isoelectronic species have same radii. Reason : They contain different number of electrons. *

Answer 1

Answer:

Asertion is false and reason is true

Answer 2

Both Assertion and Reason are false.

• Isoelectronic species are those species of ions and atoms that have the same amount of electrons. For example, P3–, S2–, Cl– are Isoelectronic species as they all have 18 electrons in their outermost orbit.
• Isoelectronic species always have a different atomic radius because the number of protons and neutrons in such species are always different.
• Isoelectronic ions with a higher nuclear charge will have a smaller size than those with a lower nuclear charge.
• Hence, both assertion and reason are false.