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Alkaline earth metals are so called because their oxides are alkaline and found in the:
ASun's surface
BEarth's crust
COcean water
DUpper air
Answer & Solution
Correct answer: B. Earth's crust
1. The word earth in the name refers to where the oxides occur.
2. They are dug from the ground.
3. The oxides are found in the earth's crust.
_Source: NCERT Class 11 Chemistry Part II, Unit 10, The s-Block Elements._
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