Let the element is X.
Given mass of the element X = 60 g
No of moles of the element = 5
Therefore, mass of 1 mole of the element = molar mass of the element X = 60/5 = 12 g
Identification of X: The molar mass of X is 12 g. Now 12 g is the molar mass of element C. Therefore, the element in the problem must be Carbon.
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