There are many protons, neutrons and electrons in a manganese atom.

Protons are positive particles, the number of which is numerically equal to the ordinal number of the element.

Manganese has a serial number of 25, that is, a manganese atom contains 25 protons.

Neutrons are neutral particles. To determine the number of neutrons, you need to subtract the number of protons (serial number) from the atomic mass.

Ar (Mn) = 55, that is, the number of neutrons is 30 (55 – 25).

Electrons are negative particles. Their number is equal to the number of protons, since an atom is an electrically neutral particle.

The manganese atom has 25 electrons.