Gases nobles

Noble gases, including helium, argon, neon, and xenon, are colorless, odorless, and mostly non-reactive due to their full outer electronic layers. Previously thought to form no compounds, some compounds like Xenon tetrafluoride have been discovered.

Which group of the periodic table do helium, argon, neon, and xenon belong to?

• Group I

• Group V

• Group VII

• Group Zero

What is a common characteristic of noble gases?

• They are highly reactive.

• They have a metallic luster.

• They are colorless and odorless.

• They are solid at room temperature.

Why do noble gases rarely react with other elements?

• They are too heavy.

• They are always in a liquid state.

• They have a full outer electronic layer.

• They are not found in nature.

What was the previous belief about noble gases?

• They were colored gases.

• They formed no compounds.

• They could form many compounds.

• They were highly reactive.

Which compound of a noble gas has been discovered?

• Argon hexafluoride

• Xenon tetrafluoride

• Helium dichloride

• Neon trioxide