Question

What is one element in the which is a gas at room temperature and in which the atoms are joined together in molecules?

Answer 1

Oxygen

Explanation:

Oxygen is an element which is a gas at room temperature. However, Oxygen can only be a gas at room temperature if it is joined to itself in an Oxygen molecule of `0"_2` . This is because Oxygen is a highly reactive element that wants to form bonds, even with itself.