Question

Why are the atomic numbers and atomic mass numbers always in whole numbers?

Answer 1

Because protons and neutrons are solid, it's a whole number. The atomic number must always be protons in a nucleus. Which can never exist fractions of a proton.

Answer 2

Dear Student,

◆ Atomic numbers and atomic mass numbers always in whole numbers because -

• Number of protons in the nucleus of an atom is called its atomic number.
• Total number of protons and neutrons in the nucleus is called atomic mass number.
• Both protons and neutrons are indivisible and always exists as a whole. Hence, it is always a integer.
• Also at least one proton is always there in any atom, hence it can't be zero.
• Therefore, atomic number and atomic mass number are whole numbers.

Thanks dear...