Atomic Size | MCQs

Explanation

The volume of an atom is typically calculated using the atomic radius and the formula for the volume of a sphere (V = (4/3)πr³), where r is the atomic radius.

The atomic radius is the distance from the nucleus to the outermost electron orbital.

Explanation

The diameter of an atom is in the order of 0.2 nanometers (nm), or 200 picometers (pm), which is equivalent to 2 x 10^-10 meters.

Explanation

Sulfur (S) has the smallest atomic radius among the options.

Because atomic radius decreases across a period from left to right due to increasing nuclear charge, which pulls the electrons closer to the nucleus.

Francium (Fr) has the highest atomic radius in the periodic table.

Helium has the smallest atomic radius in the periodic table.