Question

Define atomic number. How it is denoted ?
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Answer 1

Answer:

The atomic number or proton number (symbol Z) 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. The sum of the atomic number Z and the number of neutrons N gives the mass number A of an atom.

Answer 2

Answer:

The number of protons in the nucleus of an atom,which is characteristic of a chemical element

Explanation:

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