JEE Main20253 Apr 2025Morning ShiftChemistrySome Basic Concepts of ChemistryActual

Among 10⁻⁹ ~g (each) of the following elements, which one will have the highest number of atoms? Element : Pb , Po , Pr and Pt

Options

Correct answer

B. Pr

Step-by-step solution

No. of atoms = Massin g Molar Mas ( ~g / mol ) N _ A Therefore for the same Mass element having the least Molar mass will have the higher no. of atoms. - M _ Po =209 - M _ Pr =141 - M _ Pb =207 - M _ Pt =195

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