Asked by mema

What is the mass number of an atom of potassium that has 20 neutrons?

14 years ago

Answered by DrBob222

mass # = # protons + # neutrons.
Atomic number = # protons.

14 years ago

Answered by Anonymous

4 years ago

Answered by Paula Lyn

What is the charge of potassium atom if you substract the number of electrons and the number of protons?

4 years ago

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