What is the Mass Number of an atom?

  • 0 votes

Chemistry! :)

Posted Tue 31st May, 2011 @ 21:59 by Chris

2 Answers

  • 2 votes

Mass number is the number of protons and neutrons put together, sometimes referred to as the nucleon number.

Answered Tue 31st May, 2011 @ 23:19 by Al
  • 1 vote

the mass number can also be referred to as the relative atomic mass.

its the 'big number' on the periodic table

Answered Wed 1st June, 2011 @ 19:24 by Pui Pui