Question

The correct arrangement of elements in the increasing order of their
tendency to lose electrons is
Mg < Ca < Be < Sr.
K< Na < Rb < Li
©
Be < Mg Sr < Ca
D
Na < 5 < Rb < Cs​

Answer 1

The correct arrangement of elements in the increasing order of their

tendency to lose electrons is Na < K < Rb < Cs.

• The tendency to lose electron increases with increase in the radius of the atom and decrease in the effective nuclear charge of the atoms.
• For elements belonging to the same group, the effective nuclear charge almost remains constant but the atomic radius as one moves down the group due to addition of extra shells.
• Hence, the tendency to lose electrons increases as one moves down a group of the periodic table.