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Question
____________ and ____________ are the rarest elements of the group 18.
Options
Xenon, radon
Xenon, helium
Helium, argon
Argon, radon
MCQ
Fill in the Blanks
Solution
Argon and radon are the rarest elements of the group 18.
shaalaa.com
Chemical Properties of Elements of Groups 16, 17 and 18
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