Chemistry
Chemistry, 14.10.2019 03:30, kaitlyn114433

The atomic mass of an element is the weighted average mass of the isotopes of that element. (true or false)
atoms with the same number of protons but different number of neutrons are called what? (choices: _isotopes, ions , iosomers)
how many neutrons are in potassium-40? the chemical symbol for potassium is k.
(choices: _19,20,21,40))

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