Question

Define
(1) Atomic number
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Answer 1

Answer:

1. 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.

2. The atomic number uniquely identifies a chemical element.

3. It is identical to the charge number of the nucleus

4. The atomic number is the total number of protons present in the atom.

5.  For example, the atomic number of Mg is 12.

6.  It contains 12 protons and 12 electrons.

Answer 2

Atomic number:

• Accordingly, the quantity of protons, which is often capable of the number of electrons within the neutral atom, is additionally the number.
• The number unambiguously identifies a substance.
• It is similar to the charge range of the nucleus
• The {atomic range|number} is that the total number of protons gift within the atom.
• For example, the number of Mg is twelve.
• It contains twelve protons and twelve electrons.