Question

Ionization energy increases on moving down in Group 1 of the Periodic Table.

• A. True
• B. False

Answer 1

The correct option is B False

Ionization energy

Ionization energy is the minimum energy that an electron in a gaseous atom or ion has to absorb to come out of the influence of the nucleus.

Concept:

1. In general, ionization energy increases across a period and decreases down a group.
2. ionization energy generally increases as you move left to right across a period. This is due to the increasing nuclear charge, which results in the outermost electron being more strongly bound to the nucleus.
3. The ionization energy decreases as you go down a group because the increase in electron shielding from the rising number of energy levels becomes stronger than the force of attraction from the increasing nuclear charge. Thereby, reducing the amount of energy required to remove it.

Hence the given statement is false.