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Q.1Mass of 1 atom of Hydrogen is(A) 1.66 x 10-24 g (B) 10-22 g(C) 10-23 g(D) 10-25 g

Answer»

Mass of one mole of Hydrogen= 1.008 gm

One mole of Hydrogen have 6.022 * 10^23 atoms

So, mass of 6.022 * 10^23 atoms of Hydrogen = 1.008 g

Therefore, mass of 1 atom of Hydrogen = 1.008/6.022*10^23= 1.66 * 10^-24 g

(A) is correct option



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