During a science class,Zovion and Kevin were discussing elements nts. Zawion asked Kevin, "Which of the following is a gas?" Helium Oxygen Nitrogen Hydrogen

## Step 1<br />The problem is asking us to identify which of the given options is a noble gas. Noble gases are a group of chemical elements with similar properties; they are all odorless, colorless, monatomic gases with very low chemical reactivity. The six naturally occurring noble gases are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and the radioactive radon (Rn).<br />## Step 2<br />Looking at the options provided, we can see that only Helium is a noble gas. Oxygen, Nitrogen, and Hydrogen are not noble gases.