Question

If bromine atom is available in the form of say two isotopes 75-35 Br(49.7)and81-55Br(50.3) then calculate the average atomic mass of bromine atom

Answer 1

$\huge\bold{Answer :}$

Average Atomic mass = [ 75 × 49.7 ] + [ 81 × 50.3 ]

= [ 75 × 49.7/100 ] + [ 81 × 50.3/100 ]

= [ 75 × 0.497 ] + [ 81 × 0.503 ]

= [ 37.275 ] + [ 40.743 ]

= 78.018 amu.

Answer 2

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