NCERT Exercise 10 - Structure of the Atom
Question: If bromine atom is available in the form of two isotopes ⁷⁹₃₅Br (49.7%) and ⁸¹₃₅Br (50.3%), calculate the average atomic mass of bromine atom.
Answer: 80.006 u (approximately 80 u).
Full step-by-step NCERT solution with diagrams on Something by Zero.