Question : Which of the following cannot be beaten into sheets?
Option 1: Gold
Option 2: Silver
Option 3: Potassium
Option 4: Aluminium
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Correct Answer: Potassium
Solution : The correct option is potassium .
Malleability refers to the quality of metals that permits them to be hammered or moulded into thin sheets. Because of its softness and limited mechanical strength, potassium cannot be beaten into sheets. It reacts quickly with oxygen and moisture, resulting in the fast production of a brittle oxide coating on its surface that would shatter under mechanical force.
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