Question

the outermost s orbital of an atom contains two electrons. always true sometimes true never true

Explanation:

The s orbital can hold a maximum of 2 electrons. However, not all atoms have their outermost s orbital filled with 2 electrons. For example, hydrogen (H) has only 1 electron in its 1s orbital. But elements like magnesium (Mg) have 2 electrons in their outermost s orbital (3s²). So, it depends on the specific atom.

Answer:

Sometimes true