bromine occurs in nature mainly in the form of two isotopes br and br. if the abundance of br isotope is 49.7% and that of br isotope is 50.3%. calculate the average atomic mass of bromine...
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3
Answer:
Average atomic mass of an element is calculated by taking the weighted average of the atomic masses of stable Isotopes.
In this case , as we know Bromine has two stable Isotopes, Bromine-79 and Bromine -81.
The isotope with mass 79 is present in 49.7% and isotope with mass 81 is present in 50.3% in nature.
Therefore Average atomic mass of bromine is:
= ( 79x49.7/100) +(81x50.3/100)
=(79x0.497) + (81×0.503)
=39.264 + 50.743
=80.006u
Explanation:
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Answered by
3
Explanation:
The average atomic mass of bromine
( 79 × 49.7 ) + ( 81 × 50.3 ) / 100
= 3926 . 3 + 4074 . 3 / 100
= 8000 . 6 / 100
= 80 u
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