Chemistry
Assertion (A): Magnesium burns in oxygen to produce a compound magnesium oxide with the molecular formula MgO.
Reason (R): Magnesium oxide is a white amorphous solid.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Chemical Formula
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Answer
Both A and R are true but R is not the correct explanation of A.
Explanation — Magnesium burns in oxygen to form magnesium oxide, whose molecular formula is MgO. Magnesium oxide is a white amorphous solid. However, the fact that magnesium oxide is a white amorphous solid does not explain why magnesium burns in oxygen to form MgO.
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