Question

If bromine atom is available in the
form of say two isotopes 79/35 br(49. 7%)
and 82/35 br (50.5%). Calculate the average atomic mass of bromine atom.​

Answer 1

Answer:

Step-by-step explanation:

Solution:- (C) 80.006

Percentage of  

35

79

​  

Br=49.7%

Percentage of  

35

81

​  

Br=50.3%

Therefore,

Average atomic mass =  

100

49.7×79+50.3×81

​  

 

=  

100

3926.3+4074.3

​  

 

=  

100

8000.6

​  

=80.006