The element chlorine has two naturally occurring isotopes, 35Cl and 37Cl.
Which is true about the atomic mass of chlorine provided on a periodic table?
A.
The atomic mass is calculated using the weighted average of the isotopes.
B.
The atomic mass is based on the number of protons and neutrons in the nucleus.
C.
The atomic mass is based on the isotopes with the most neutrons.
D.
The atomic mass for the most abundant isotope is used.
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