How many protons electrons and neutrons does oxygen-2 have?

Answer 1

A negative 2 charge means that the oxygen is richer in two electrons. The configuration of oxygen is: 1s22s22p4 and we can conclude that it has 8 electrons. For the atom to be neutral the amount of protons must be the same. Oxygen atom has 8 neutrons. Let's add the two electrons to the eight, so the oxygen will be on negative 2 charge.

To summarize, the amount of electrons - 10, protons- 8, neutrons - 8.

Answer 2

The ion O-2 has 8 protons and 10 electrons!

Answer 3

protons 8 (= atom number), electrons 10 (= 8 + 2)

Answer 4

Oxygen always has 8 protons regardless of the charge. That is what makes it oxygen.

Answer 5

Oxygen has 8 protons and electrons; the number of neutrons is different for each isotope.