Question

The least electronegative group is the …?

Answer 1

You must know the concept of electronegative and their groups.
First, we will see what is electronegative. It is conceived to be the ability of an atom in a chemical bond to polarize electron density towards itself.
Pauling scale was the earliest among the various types of scales, and still, it is widely used. In this, we are going to see what electronegativity is, their tendencies, and their group alkali metals.

Complete answer:
The alkali metals are the LEAST ELECTRONEGATIVE. In period, these are the LEAST nuclear charge, also they are the least shielding by other electrons (only the one electron is present in their valence shells). The least electronegative group is VIII; they are inert gases.
The inert gases have effective electronegativity of zero.
That is the inert gases are stable, there will be no attraction for more electrons
Any bonding electron pair becomes farther from the metal nucleus, so it is less strongly attracted towards it, as the increase in size of the metal atom. This corresponds with electronegativity decrease down Group ${\mathbf{1}}$.