Question

1. Explain with examples: (i) atomic number is) mass number, which of these two is the more fundamental property of an element?
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Answer 1

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.

Explanation:

The mass number, also called atomic mass number or nucleon number, is the total number of protons and neutrons in an atomic nucleus. It is approximately equal to the atomic mass of the atom expressed in atomic mass units.

Answer 2

Answer:

Atomic number is a more fundamental property of an element than its atomic mass.

Explanation:

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