Define : 1. An Atom 2. Atomic number

Question

Define :

1. An Atom

2. Atomic number

3. Mass number

4. Atomic weight

Answer 1

1. An Atom: Smallest particle of an element that can exist and have properties of an element.

2. Atomic number : Number of protons present in the nucleus of an atom.

3. Mass number: Number of protons and neutrons present in the nucleus of an atom.

4. Atomic weight: It is the ratio that tells how many times an atom of an element is heavier than an atom of Hydrogen.