What is the relative atomic mass of an element?

cbse
atomsandmolecules

#1

(i) What is the relative atomic mass of an element?
(ii) What is the average atomic mass of hydrogen?


#2

(i) Relative atomic mass is defined as the number of times a given atom is heavier than 1/12th of mass of 1 atom of C-12.
(ii) The atomic mass of hydrogen is taken as lu whereas actually it is 1.008 u.