EdelmiraLiukko570 EdelmiraLiukko570
  • 23-10-2014
  • Chemistry
Answered

When an atom becomes an ion does its mass number change?

Answer :

Cheese34
Cheese34 Cheese34
  • 23-10-2014
Its mass number does not change because the atom is losing or gaining electrons, so the change is almost not measurable because the electrons weigh so little. 

In other words: its mass number does not change

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