Which one of the followings has maximum number of atoms ?

1. A. 1 g of Mg(s) [Atomic mass of Mg = 24]
2. B. 1 g of O2 (g) [Atomic mass of O = 16]
3. C. 1 g of Li(s) [Atomic mass of Li = 7]
4. D. 1 g of Ag(s) [Atomic mass of Ag = 108]

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