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3 years ago

5

Calculate the average atomic mass of element X using the table below. Then use the periodic table to identify the element. Separ

ate your answers with a comma.

1 answer:

Ksenya-84 [330]3 years ago

4 0

Answer:

126.8, Iodine

Explanation:

mass ×abundance/100
(126.9045×80.45/100)+(126.0015×17.23/100)+(128.2230×2.23/100)
102.1+21.7+3=126.8

<em>IODINE</em><em> </em><em>has</em><em> </em><em>an</em><em> </em><em>atomic</em><em> </em><em>mass</em><em> </em><em>of</em><em> </em>126.8 or 126.9

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