EVERYDAY SCIENCE

Detailed explanation-1: -The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus.

Detailed explanation-2: -The atomic number equals the charge on the nucleus. It therefore also equals the number of protons in the nucleus and also equals numerically the number of electrons in the neutral atom. The atomic number has the symbol Z.

Detailed explanation-3: -Atomic number of an element tells about the number of protons present. The number of protons present will be equal to the number of electrons. Therefore, the atomic number of an atom is equal to both the number of electrons and protons present in an atom.

Detailed explanation-4: -The atomic number of an element is equal to the number of protons present in an atom.

Detailed explanation-5: -atomic number, the number of a chemical element in the periodic system, whereby the elements are arranged in order of increasing number of protons in the nucleus. Accordingly, the number of protons, which is always equal to the number of electrons in the neutral atom, is also the atomic number.