14. Assertion: Atomic mass of potassium is 39. Reason: An atom of potassium is 39 times heavier than 1/12th of the mass of carbon atom (C12). OUTATIONS
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Assertion and Reason both are correct and Reason is the correct explanation of Assertion.
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An atom of potassium is 39 times heavier than 121th of the mass of carbon atom (C12). Read the above assertion and reason and choose the correct option ...
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