The mass of one atom of an element X is 2.0 × 10-23 g.

(i) Calculate the atomic mass of element X.


(ii) What could element X be?

(i) Mass of one atom of element X = 2 × 10-23 g

Mass of 1 mole of atom of element X = 2 × 10-23 × 6.022 × 1023 = 12.044 g


So, atomic mass of the element X = mass of 1 mole of element = 12 u


(ii) Element X is CARBON.


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