Calcium has 6 different isotopic forms, listed with their fractional composition values, 40Ca-0.96941; 42Ca-0.00647; 43Ca-0.00135; 44Ca-0.20

Question

Calcium has 6 different isotopic forms, listed with their fractional composition values, 40Ca-0.96941; 42Ca-0.00647; 43Ca-0.00135; 44Ca-0.2086 ; 46Ca-0.00004; and 48Ca-0.00187. Identify the most and least abundant isotopes of calcium.

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Ngọc Khuê 2 months 2021-07-24T15:18:47+00:00 1 Answers 7 views 0

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    2021-07-24T15:20:34+00:00

    Answer:

    The most abundant isotope is ⁴⁰Ca and the least abundant is ⁴⁶Ca

    Explanation:

    The mass, in percentage, of eah isotope of Calcium is their fractional composition multiplied by 100:

    40Ca-0.96941*100 =  96.941% of ⁴⁰Ca

    42Ca-0.00647*100 = 0.647% of ⁴²Ca

    43Ca-0.0013*100 = 0.13% of ⁴³Ca

    44Ca-0.02086*100 = 2.086% ⁴⁴Ca

    46Ca-0.00004*100 = 0.004% ⁴⁶Ca

    48Ca-0.00187*100 = 0.187% of ⁴⁸Ca

    That means the most abundant isotope is ⁴⁰Ca and the least abundant is ⁴⁶Ca

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