Which one of the following properties of alkali metals increases in magnitude as the atomic number rises?

Question

Which one of the following properties of alkali metals increases in magnitude as the atomic number rises? (A) Ionic radius (B) Melting point (C) Electronegativity (D) First ionisation energy

Tardigrade Admin · Accepted Answer

The ionic radii of alkali metal increases as the atomic number increases when we move from top to bottom because on moving down the group, there is a increase in the number of shells and therefore, ionic radii increases.

Q. Which one of the following properties of alkali metals increases in magnitude as the atomic number rises?

Ionic radius

Melting point

Electronegativity

First ionisation energy

The ionic radii of alkali metal increases as the atomic number increases when we move from top to bottom because on moving down the group, there is a increase in the number of shells and therefore, ionic radii increases.