Question:
The element thallium (Tl) has two naturally occurring
Last updated: 7/29/2022
The element thallium (Tl) has two naturally occurring isotopes, 203 T1 and 205 T1, with an average atomic mass of 204.383 u. Thallium is 70.48% 205 Tl, and the atomic mass of 205 Tl is 204.974 u. Calculate the atomic mass of 203 Tl. u