The mass of a sodium atom is 23 times greater than the mass of 1/12th of mass of c-12 atom. What is the relative atomic mass of sodium
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it means the relative mass of sodium compared with 1/12 the mass of a carbon C-12 isotope . It means it is 23 times heavier than 1/12 th the mass of one C-12 isotope of carbon. Also it says that one atom of sodium has ( 23 - 11 ) = 12 no. of neutrons in its nucleus. hope this answer helpful to u
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