Why is the atomic weight of bromine listed on the periodic table not a whole number?
Answers
Answered by
0
Answer:
Because it reflects the isotopic abundance of bromine....
Explanation:
All the elements have an envelope of isotopes, and the atomic mass quoted on the Periodic Table is the WEIGHTED AVERAGE of the individual isotopes...
To a first approximation bromine consists of TWO isotopes:
51% 79Br, and 49% 81Br. The weighted average of the isotopes gives the quoted atomic mass.
Similar questions