Question

Identify the atom having smaller Ionization in the energy following pair

Answer 1

Answer:

Dear Student,

◆ Ionisation enthalpy -

It is the minimum amount of energy required to remove the valence electron of an isolated neutral gaseous atom or molecule.

# Trend in ionization enthalpy -

Usually ionization enthalpy

increases from left to right in a period

decreases from top to bottom in a group

◆ Lower ionization enthalpy. -

(i) Mg or Na

Na < Mg because ionization enthalpy increases from left to right in a period.

(ii) Li or O

Li < O because ionization enthalpy increases from left to right in a period.

(iii) Br or F

Br < F because ionization enthalpy decreases from top to bottom in a group.

(iv) K or Br

K < Br because ionization enthalpy increases from left to right in a period.

Explanation: