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Group 2 elements except one are known as the alkaline earth metals; the exception is:
ABeryllium
BMagnesium
CCalcium
DBarium
Answer & Solution
Correct answer: A. Beryllium
1. The name is applied to most of the group.
2. The first member is left out of it.
3. That member is beryllium.
_Source: NCERT Class 11 Chemistry Part II, Unit 10, The s-Block Elements._
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