SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Br-79
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Br-80
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they are equal
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there is no way to tell
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Detailed explanation-1: -The element bromine has an atomic weight of 79.9 and consists of two stable isotopes bromine-79 and bromine-81. The isotope bromine-79 has a mass of 78.9 amu and a percent natural abundance of 50.5%. The isotope bromine-81 has a percent natural abundance of 49.5%.
Detailed explanation-2: -Bromine has two naturally occurring isotopes. The most abundant isotope (50.69%) is 79Br 79 B r of mass 78.9183 amu.
Detailed explanation-3: -6. Without doing any math, are there more Bromine-79 atoms or more Bromine-80 atoms on earth? (Hint: look at the periodic table.) There are more Bromine-80 atoms because the atomic mass on the periodic table (79.904)is closer to 80.
Detailed explanation-4: -Bromine has two naturally occurring isotopes (Br-79 and Br-81) and has an atomic mass of 79.904 amu. The mass of Br-81 is 80.9163 amu, and its natural abundance is 49.31%.
Detailed explanation-5: -Bromine has two stable isotopes, 79Br and 81Br, having relative mass abundances of 50.686% and 49.314%, respectively (Eggenkamp and Coleman, 2000).