Question

Chlorine has two isotopes of atomic mass units 35 and 37. The relative abundances of these two isotopes are
75% and 25% respectively. Find the average atomic mass of chlorine.​

Answer 1

Answer:

35.50

Explanation:

see the solution.............

Answer 2

Answer:

35.5

Explanation:

To find out average relative atomic mass

We use formula

(Mass1 x percent + mass2 x percent) /100

So

(35 x 75 + 37 x 25 )/100

Which is nearly

35.5