johnsonr441 johnsonr441

28-09-2016
Chemistry

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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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username000 username000

28-09-2016

Isotope, and sorry I do not know the answer to the second one potassium (k) generally has 20 neutrons. Hope this helps.

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