1.- The atomic masses of 203 Tl and 205 Tlare 202.972320 and 204.974401 amu, res

Question

1.- The atomic masses of 203Tl and 205Tlare 202.972320 and 204.974401 amu, respectively. Calculate thenatural abundances of these 2 isotopes. The average atomic mass ofthallium is 204.4 amu. 2.- The atomic masses of 3517Cl (75.53%) and 3717Cl (24.47%) are 34.968 and 36.956amu, respectively. Calculate the average atomic mass of chlorine.The % in parentheses denote the relative abundances. 1.- The atomic masses of 203Tl and 205Tlare 202.972320 and 204.974401 amu, respectively. Calculate thenatural abundances of these 2 isotopes. The average atomic mass ofthallium is 204.4 amu. 2.- The atomic masses of 3517Cl (75.53%) and 3717Cl (24.47%) are 34.968 and 36.956amu, respectively. Calculate the average atomic mass of chlorine.The % in parentheses denote the relative abundances.

Explanation / Answer

1. The average atomic mass of an element is givenby the formula ,

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