The mass number of a nucleus (except Hydrogen) is:

always less than its atomic number

never less than its atomic number

sometimes equal to its atomic number

sometimes less than and sometimes more than its atomic number

Question

Chemistry

Talan Middleton

19 September, 04:58

The mass number of a nucleus (except Hydrogen) is:

always less than its atomic number

never less than its atomic number

sometimes equal to its atomic number

sometimes less than and sometimes more than its atomic number

+5

Answers (2)

Know the Answer?

Lyric Duran · Answer 1

Never less than its atomic no.

Mass no. = protons + neutrons

Raegan · Answer 2

Never less than its atomic number

This is because the mass number is the sum of both the number of neutrons and protons, while the atomic number is the number of protons. Hydrogen is the only element without neutrons.

The mass number of a nucleus (except Hydrogen) is:always less than its atomic numbernever less than its atomic numbersometimes equal to its atomic numbersometimes less than and sometimes more than its atomic number

The mass number of a nucleus (except Hydrogen) is:

always less than its atomic number

never less than its atomic number

sometimes equal to its atomic number

sometimes less than and sometimes more than its atomic number