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  • Naturally occurring chlorine is 75%  Cl35 which has an atomic mass of 35 amu and Cl37 which has a mass of 37 amu. Calculate the atomic mass of chlorine-<div class='qn

Naturally occurring chlorine is 75%  Cl35 which has an atomic mass of 35 amu and Cl37 which has a mass of 37 amu. Calculate the atomic mass of chlorine-

Option: 1

35.5 amu


Option: 2

36.5 amu


Option: 3

71 amu


Option: 4

72 amu


Answers (1)

best_answer

Answer: (A)

Average atomic mass

\\=\frac{\textup{\% of I isotope x its atomic mass + \% of II isotope x its atomic mass} }{100} \\\\ =\frac{\textup{75 x 35 + 25 x 37} }{100} \\\\= \textup{35.5 amu} 

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himanshu.meshram

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