Question

2.Explain with examples
(i) Atomic number​

Answer 1

Answer:

Atomic number: The atomic number is the total number of protons present in the atom. For example, the atomic number of Mg is 12. It contains 12 protons and 12 electrons.

Answer 2

Answer:

Atomic number is defined as the total number of protons present in the nucleus of an atom. It is denoted by Z. For example, for Hydrogen, Z = 1, because in hydrogen atom, only one proton is present in the nucleus.

Explanation:

Neutral atoms of an element contain an equal number of protons and electrons. The number of protons determines an element's atomic number (Z) and distinguishes one element from another. For example, carbon's atomic number (Z) is 6 because it has 6 protons.