Which component of the atom has the least mass a. protons b. electrons c. neutrons d. all are the same size

Option (b) is the correct answer.

Explanation:

Every atom consists of three sub-atomic particles which are protons, neutrons and electrons.

Inside the nucleus of an atom, there will be only protons and neutrons. Whereas electrons revolve around the nucleus of an atom.

Protons have a positive charge, neutrons have no charge and electrons have a negative charge.

Mass of these subatomic particles are as follows.

Proton :

Neutron :

Electron :

Thus, we can conclude that out of the given options electrons has the least mass.

c is the answer because when something is left after something evaporates that shows the chemical change.

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.