Question

What is atomic number? Explain with examples.​

Answer 1

The number of protons in the nucleus of an atom determines an element's atomic number. For example, all hydrogen atoms, and only hydrogen atoms, contain one proton and have an atomic number of 1.

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Answer 2

Answer:

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Atomic Number: The number of the protons present in the nucleus of an atom is called atomic number.

For example, the atomic number of sodium is 11. It contains 11 protons and 11 electrons.