Question

The ionisation energy is lowest for. (A)Nitrogen (B)Oxygen (C)Fluorine (D)Neon​

Answer 1

Answer:

the ionisation energy is lowest for neon

Answer 2

Answer: (A) Nitrogen

Explanation:

Ionization Energy (Eᵢ) : It is the minimum amount of energy required to remove the valence electron from its outermost orbit from the neutral gaseous atom or molecule.

Along a period as the number of valence electrons increases, the nuclear charge of the atom increases and so the nuclear force of attraction on these valence electrons also increases. Since the ionization energy increases along a period, therefore, it is easy to remove Nitrogen's valence electrons.

Hence, the ionization energy is lowest for Nitrogen.