atomic and mass numbers Flashcards
1
Q
what are isotopes?
A
they’re atoms of the same element that have different numbers of neutrons
2
Q
what are a lot of isotopes?
A
radioactive
3
Q
what can atoms lose from an ion?
A
electrons from their outer energy level
4
Q
what does the ion have when an atom loses one electron?
A
a +1 charge
5
Q
what does the ion have when an atom gains one electron?
A
a -1 charge
