NTSE Stage 2 SAT 2017 Question Paper

Question : 18 of 100

Marks: +1, -0

^25\Cl

and

^37\Cl

are the two isotopes of chlorine, in the ratio 3 : 1 respectively. If the isotope ratio is reversed, the average atomic mass of chlorine will be-

Solution:

Average atomic mass

={35×1+37×3}/4

\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\= 36.5 \u

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