Question

When electrons are gained by oxygen, the ion formed is

a. O +
b. O 2+
c. O -
d. O 2-

Answer 1

when it gains one electron it will be c.O-
when it gain two electrons it will be d.O-2

Answer 2

since in question it is mentioned electrons we can conside 2 electrons and answer will be O-2

Answer 3

any problem