Is oxygen a positive ion ,negative ion, or a neutral atom?

Question

biology homework

Answer 1

As an ion, it is usually negative but it doesn't generally exist by itself but part of a molecule.

Answer 2

There are several answers to this question:

1.  oxygen gas is a neutral, diatomic molecule.

2.  the oxygen atom is a neutral atom.

3.  oxygen can also be ionized into either a positive ion (by loss of an electron) or a negative ion (through the gaining of an electron)

Answer 3

neutral atom.. if it gains 2 electrons then it'll become a negative ion.