Twenty is the of potassium.
a) charge
b) atomic mass
c) atomic number
d)...
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Physics, 28.09.2019 05:20, nuhaminbruk
Twenty is the of potassium.
a) charge
b) atomic mass
c) atomic number
d) number of neutrons
![answer](/tpl/images/cats/otvet.png)
Answers: 2
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