Full outer shells. Very little reaction.
Group 0 is on the far right. It includes helium, neon and argon. They are colourless gases at room temperature.
Their atoms have full outer shells, making them stable and very unreactive. Helium has 2 outer electrons; the others have 8.
Noble gases exist as single atoms. The word for this is monatomic.
As relative atomic mass increases down Group 0, boiling point increases. All still have low boiling points.
| Gas | Boiling point (rounded) |
|---|---|
| Helium | −269°C |
| Neon | −246°C |
| Argon | −186°C |
Remember: −186°C is warmer than −269°C.
Full outer shells; single atoms; boiling points increase down the group.
Look closely. Use the clues.
Use the pictures and patterns.
One point for each answer you get right first time.
No timer. Take your time and use a clue whenever you need one.