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Which of the following groups contain three elements with stable electron configurations?

Alithium, krypton, argon
Bargon, neon, barium
Cxenon, neon, boron
Dhelium, xenon, neon

Verified Answer :

SJ2006
DHelium, Xenon, Neon ..........must be the answer.

It’s D because a. contains carbon which is not a noble element and b. contains boron which is not a member whilst c. contains calcium which is not included.

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