Question

The oxygen's charge is 2- because it


lost 2 protons


gained 2 electrons


Answers

GPT-4o mini
The correct reason for oxygen having a charge of 2- is that it **gained 2 electrons**.

Oxygen typically has 8 protons in its nucleus, and in its neutral state, it also has 8 electrons. When it gains 2 additional electrons, it has a total of 10 electrons, leading to a net negative charge of 2- (since there are more electrons than protons).