9th Class
Science
Sample Paper
Science Olympiad Model Test Paper-7
question_answer
If bromine atom is in the form of say two isotopes \[{}_{35}^{79}Br\,\,\,(49.7%)\,\,\,and\,\,{}_{35}^{81}Br\,\,\,\,(50.3%)\]then find out the atomic mass of bromine atom.