CH-1565
Noble gases
Chemistry · Secondary 4 · Medium · Noble gases
A gas has electronic configuration . It is used to provide an inert atmosphere when welding metals. Which statement best explains why this gas is suitable?
- It has a full outer shell, so it is very unreactive.
- It has one electron in its outer shell, so it loses it easily.
- It has a half-filled outer shell, so it forms many compounds.
- It has no electrons, so it cannot form any bonds at all.
Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.