Question

Q1. What does the atomic number of an element represent? *​

Answer 1

Answer:

number of protons

The atomic number is the number of protons in the nucleus of an atom. The number of protons define the identity of an element (i.e., an element with 6 protons is a carbon atom, no matter how many neutrons may be present).

Answer 2

Answer:

number of protons in the nucleus

Explanation:

Atomic number of an element represents the number of protons in the nucleus. It is also equal to the number of electrons in neutral atom. The number of neutrons is equal to the difference between mass number and atomic number.

For example, for

17

37

Cl, the atomic number is 17, the mass number is 37, there are 17, electrons, 17 protons and 37−17=20 neutrons.