Question

Chlorine has an average atomic mass of 35.45 amu. The 2 naturally occurring isotopes of chlorine are chlorine-35 and chlorine-37. Why does this indicate that most chlorine atoms contain 18 neutrons?

Answer 1

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Answer 2

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Answer 3

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Answer 4

Most chlorine atoms contain 18 neutrons because:

The atomic number of Chlorine is 17 - indicating the number of protons found in the atomic nucleus. Seeing as the atomic mass is 35, we subtract the number of protons from 35 to get the number of neutrons, 18.

We test our equation: 17 protons + 18 neutrons = 35

Chlorine-35 is the most common natural occurring isotope of chlorine which is why most chlorine atoms contain 18 neutrons.

Answer 5

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Answer 6

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Answer 7

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Answer 8

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