Final answer:
In nature, an oxygen atom with a charge of -2 is more likely to exist than an oxygen atom with a charge of +6.
Step-by-step explanation:
**Oxygen atom with a charge of -2** is more likely to exist in nature than an oxygen atom with a charge of +6. In many compounds, such as water (H2O), oxygen commonly has a charge of -2. This is because oxygen is highly electronegative and tends to gain electrons to fill its valence shell. On the other hand, an oxygen atom with a charge of +6 would require significant energy input to remove six electrons, which is less energetically favorable.