Chlorine occurs in nature in two isotopic forms, with masses 35 u and 37 u in the percentage occurance of 75% and 25% respectively. What is the average atomic mass of chlorine atom?

35 amu

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37 amu

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35.5 amu

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36 amu

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Solution

The correct option is C 35.5 amu
The average atomic mass of chlorine atom, on the basis of above data, will be

$\Rightarrow 35 \times \frac{75}{100} + 37 \times \frac{25}{100} \Rightarrow 35.5 a m u$

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Chlorine occurs in nature in two isotopic forms, with masses 35 u and 37 u in the percentage occurance of 75% and 25% respectively. What is the average atomic mass of chlorine atom?

The correct option is C 35.5 amu The average atomic mass of chlorine atom, on the basis of above data, will be ⇒ 35 ×75100 + 37 ×25100⇒35.5 amu

The correct option is C 35.5 amu
The average atomic mass of chlorine atom, on the basis of above data, will be

$\Rightarrow 35 \times \frac{75}{100} + 37 \times \frac{25}{100} \Rightarrow 35.5 a m u$