Answers

2015-01-30T19:43:38+05:30
The mass number of a nucleus is sometimes more than the atomic number and 
sometimes equal to its atomic number.
0
  • Brainly User
2015-01-30T19:44:20+05:30
The mass number of a nucleus is Sometimes more than and 
sometimes equal to its atomic number.

massnumber= protons + neutrons.

atomic number= Either protons or electrons mass.

So mass number of a nucleus is Sometimes more than and 
sometimes equal to its atomic number
0