Why calcium starts floating in a cold water

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Solution

Dear student,
Calcium starts floating because the bubbles of hydrogen gas formed stick to the surface of the metal. Magnesium does not react with cold water.
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Why calcium starts floating in a cold water

Dear student, Calcium starts floating because the bubbles of hydrogen gas formed stick to the surface of the metal. Magnesium does not react with cold water. Regards

Dear student,
Calcium starts floating because the bubbles of hydrogen gas formed stick to the surface of the metal. Magnesium does not react with cold water.
Regards