The answer would be 2-
I took the test and got it right, best of luck!
Answer:
2–
Step-by-step explanation:
Oxygen is in the 6th group originally has a charge of 1–, but when oxygen gets two electrons added to make it a stable gas configuration of s2 p6 it changes it to 2– to form an oxide ion
7.5m questions
10.1m answers