Atoms of which element contain 25 protons? magnesium (mg) aluminum (al) tin (sn) manganese (mn)

Manganese element has 25 protons.

Explanation:

Atomic number is defined as the number of protons or number of electrons that are present in an atom. It is represented as 'Z'

Z = Atomic number = Number of protons = Number of electrons

For the given options:

Option 1: Magnesium (Mg)

This element has an atomic number of 12, thus it will have 12 protons.

Option 2: Aluminium (Al)

This element has an atomic number of 13, thus it will have 13 protons.

Option 3: Tin (Sn)

This element has an atomic number of 50, thus it will have 50 protons.

Option 4: Manganese (Mn)

This element has an atomic number of 25, thus it will have 25 protons.

Hence, manganese element has 25 protons.

neutrons are in the middle of the atom and the electrons, which are much smaller.