JEE Main Chemistry question

Which main group elements have a different number of outermost electrons than their group number?

(A)Alkali metals
(B)Noble gasesCorrect
(C)Halogens
(D)None of these

Answer: (B)

Solution

By traditional group numbering (Group 0/VIII for noble gases), noble gases are assigned a group number of 0 or 8, yet they possess 8 valence electrons (2 for He), which does not match that group

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Question ID VK-133589