The Element Bromine,Br (Atomic Number 35),has Two Major Isotopes of Similar

question 13

Multiple Choice

The element bromine,Br (atomic number 35) ,has two major isotopes of similar abundance,both around 50 percent.The atomic mass of bromine is reported in the periodic table as 79.904 atomic mass units.Choose the most likely set of mass numbers for these two bromine isotopes.

• A)Br-80,Br-81
• B)Br-79,Br-80
• C)Br-79,Br-81
• D)Br-78,Br-80

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