Question

what is atomic number known as
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Answer 1

Atomic number known as 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. An atom of iron has 26 protons in its.

Answer 2

• The number of protons in the nucleus of a chemical element in the periodic system.
• As a result, the atomic number is the number of protons in a neutral atom, which is always equal to the number of electrons.
• The atomic number of iron is 26 because it contains 26 protons in its nucleus.
• The atomic number may be shown as a left subscript in the symbol denoting a particular nuclear or atomic species.
• For example, 26Fe can be expressed as an atom or nucleus of iron (chemical symbol Fe).