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Byju's Answer
Standard XII
Chemistry
Electronic Configuration of Actinides
Which amongst...
Question

Which amongst the following is not a noble gas?

A
Helium
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B
Neon
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C
Radium
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D
Radon
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Solution

The correct option is A Radium
Radium belongs to group 2 while noble gases belong to group 18 so radium is not a noble gas.

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