Naturally occuring thallium consists of two stable isotopes, Tl-203 and Tl-205 (atomic masses =
Channel: Doubtnut
Date: 2020-04-19

Naturally occuring thallium consists of two stable isotopes, Tl-203 and Tl-205 (atomic masses = 203.0 and 205.0, respectively) and has an average atomic massof 204.4. What is the percentage of Tl-205?