Question

why to lithium ,sodium and potassium float on water..

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Answer 1

Answer:

Lithium, sodium, and potassium are all very light elements, and metals that are made purely of them will have low densities.

In fact, lithium has the lowest density of all solid elements.They also all react violently with water, so even though they float, they won't stay there for very long.

Answer 2

Answer:

This makes lithium nearly half as dense as water, so if lithium was not so reactive, a chunk of the metal would float on water. ... All of the other metals on the periodic table are denser than water. While lithium, potassium, and sodium are all light enough to float on water, they are also highly reactive.

Explanation:

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