Question

53

eragon4
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