Question

Why are noble gases sometimes called rare gases?

Answer 1

The reason why noble gases are non-reactive gases:

• Noble gases are sometimes called rare gases because they are non-reactive gases.
• They are only rare in abundance relative to other gases found in the atmosphere.
• They have completely filled the outermost orbit
• They are stable and do not form a bond with other elements.
• They have a stable electronic configuration
• They are mono-atomic gases.
• Examples are$\mathrm{He},\mathrm{Ne},\mathrm{Ar}\mathrm{and}\mathrm{Kr}$.