Question

Give scientific reasons - Atomic mass number is a whole number

Answer 1

Atomis mass is sum of protons and neutrons.

Reason why it is a whole NUMBER.

→Because protons and neutrons are indivisible particles. They always exist as a whole number.
So atomic mass is always a whole number because sum of two whole numbers gices us a whole number.

Answer 2

Answer:

atomic mass tells about the maas of an atom. Since everything has a mass even an atom so atomic mass is always a whole number ie starting from 0.It can never be negative