Question

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Answer 1

Answer:

sodium piece would have more atoms

Explanation:

Due to Sodium less atomic mass and density than iron

(fact- sodium is less denser than water and thus floats on it when a reaction between water and sodium is taken

iron is solid and Mercury is liquid but iron has the density 7•8 g m-³ while Mercury have density of 13•5 g m-³. And iron floats on Mercury