Question

Atomic number of an element is equal to the number of ____ in the nucleus.

Answer 1

Answer:

Proton

Explanation:

* Atomic number is = to the number of electron in the shell.

*Number of proton is =to the number of election.

*Mass number is =no. of proton + no. of neutron

Answer 2

An atomic number of an element is equal to the number of protons in the nucleus.

• In an atom, the atomic number of the atom is defined as the number of protons in the nucleus of the atom.
• In an atom, the mass number of the atom is a sum of the number of protons and the number of neutrons in the nucleus of the atom.
• The number of protons is equal to the number of electrons.