Chemistry
Grade-9
Easy
Question
Group 18 members are also called as:
- Noble metals
- Rare earth gases
- Inner transition gases
- Frequent gases
Hint:
Helium is the first discovered rare earth gas.
The correct answer is: Rare earth gases
- Group 18 elements are called noble gases not noble metals.
- Group 18 elements are also called rare earth gases.
- Inner transition metals are group 3 elements but are separately shown as f block elements.
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