Bromine Has Two Naturally Occurring Isotopes, Br-79 and Br-81

question 83

Multiple Choice

Bromine has two naturally occurring isotopes, Br-79 and Br-81. The atomic mass of Br-79 is 78.9183 amu with a percent abundance of 50.69% and the atomic mass of Br-81 is 80.9163 amu. Calculate the atomic mass of bromine.

• A)80.91 amu
• B)78.92 amu
• C)79.90 amu
• D)80.92 amu
• E)80.03 amu

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