How are the electrons arranged in an oxygen atom?

Answer 1

It should be 2.6 The inner shell is full with two, and the next shell only contains six. When it becomes an ion, it gains two electrons which are negatively charged to make it O2-.

Answer 2

In an oxygen atom, there are 8 electrons arranged with 2 electrons in the first energy level and 6 electrons in the second energy level. This configuration follows the octet rule, which states that atoms tend to gain, lose, or share electrons to achieve a full outer shell of 8 electrons.