Question

an ion of tin-122 with a charge of +2 would have which of the following?
50 proton 50 electrons and 72 neutrons
50 proton 50 electrons and 50 neutrons
50 proton 48 electrons and 72 neutrons
50 proton 52 electrons and 72 neutrons
50 proton 48 electrons and 70 neutrons

Answer 1

@zbay Help?

Answer 2

Tin is element 50, so it must have 50 protons. Tin-122 shows that this is an isotope and the number of protons and neutrons is 122.

Answer 3

If it were an element (not an ion), its protons must equal its electrons. Since its charge is +2, it must have lost 2 electrons.