Sam S.

asked • 10/01/19

Calcium has three different isotopes. One has a mass of 35.00 amu; another has a mass of 41.00 amu; the third has a mass of 40.00 amu. Which isotope is most abundant of the three? How do you know?

I want to say it is the isotope with the largest atomic mass unit, but there are no percentages so I don't know of a way to be sure which one could be more abundant.

1 Expert Answer

By:

Ken K. answered • 10/01/19

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5 (1)

Experienced High School Teacher Specializing in Science

Shailesh K.

I agree with Ken's answer. By the way there is no isotope of Calcium that has mass of 35.0 amu. Here is the % of various isotope of Calcium found in nature. Isotope Mass / Da Natural abundance (atom %) Nuclear spin (I) Magnetic moment (μ/μN) 40Ca 39.9625906 (13) 96.941 (156) 0 0 42Ca 41.9586176 (13) 0.647 (23) 0 0 43Ca 42.9587662 (13) 0.135 (10) 7/2 -1.31727 44Ca 43.9554806 (14) 2.086 (110) 0 0 46Ca 45.953689 (4) 0.004 (3) 0 0 48Ca 47.952533 (4) 0.187 (21) 0 0 Source: Google
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10/02/19

Shailesh K.

tutor
Sorry ,Table entries leave out spaces between the fields.
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10/02/19

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