Question

Definition of Atomic No​

Answer 1

Atomic number is the number of protons in the atom. It is the characteristic of a particular element.

Note: Protons are not responsible for the chemical properties of the element, but the number of electrons. Since during a reaction, an atom may gain or lose electrons, we use the equal of number of electrons, i.e. number of protons.

For example, the atomic number of hydrogen is 1, since it has 1 proton. The atomic number of oganesson is 118, since it has 118 protons.

The periodic table arranges the element in order of atomic number.

Answer 2

HERE IS YOUR ANSWER...☺

The atomic number or proton number of a chemical element is the number of protons found in the nucleus of every atom of that element. The atomic number uniquely identifies a chemical element. It is identical to the charge number of the nucleus

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