Question

A group of elements in the periodic table is given below (Boron is the first member of the group and Thallium is the last).

Boron, Aluminium, Gallium, Indium, Thallium

Answer the following question in relation to the above group of elements:

Will the elements in the group to the right of this boron group be more metallic or less metallic in character? Justify your answer.

Answer 1

Less metallic due to increase in ionisation energy.