Which of the alkali metals is the smallest in size?

Question

Question

This question was previously asked in

RRB JE 29 May 2019 (Shift 2) CBT 1 Official Paper

Answer 1

The correct answer is Lithium

Key Points

Lithium is the smallest in size among the alkali metals.
Alkali metals include lithium, sodium, potassium, rubidium, cesium, and francium.
As we move down the group in the periodic table, the size of the atoms increases.
Lithium, being at the top of the group, has the smallest atomic size.
The small size of lithium gives it unique properties compared to other alkali metals.

Additional Information

Alkali metals are highly reactive and have one electron in their outermost shell.
They are known for their ability to lose that one electron easily, forming cations with a charge of +1.
Lithium is used in various applications, including batteries, due to its high electrochemical potential.
The reactivity of alkali metals increases down the group, making lithium the least reactive among them.
Due to its small size, lithium has a high charge density, leading to stronger interactions with other atoms and molecules.