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1.) there are three isotopes of cadmium. the most abundant isotope is cd-112 and it is found in 50.8%. cd-113 is found in 40.2% while cd-114 is found in 9%. find the average atomic mass of cadmium.
2.) fluorine has an average atomic mass of 18.99840. what is that telling us about the isotopes?
3.) sulfur has two isotopes. looking at your periodic table, tell me which isotope is the most abundant and why.
4. true or false: isotopes are the same elements with different number of protons.
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