Bromine Has Two Naturally Occurring Isotopes

question 99

Multiple Choice

Bromine has two naturally occurring isotopes. ⁷⁹Br has a mass of 78.9 amu and accounts for 50.3% of bromine atoms. If the atomic mass of bromine is 79.9 amu, what is the mass of an atom of the second bromine isotope?

• A)77.9 amu
• B)80.0 amu
• C)80.1 amu
• D)80.9 amu
• E)88.9 amu

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