The number of in an atom is the difference between the mass number and the atomic number A-Electrons

B-Neutrons

C-Protons​

While the mass number is the sum of the protons and neutrons in an atom, the atomic number is only the number of protons. The atomic number is the value found associated with an element on the periodic table because it is the key to the element's identity.

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water is used to store them because it would keep the radiation from getting out in the open and causing harm to the workers

is it a purebred? it looks more like a red nose, but it doesn't have the red could it be a staffordshire bull terrior? unsure if that's the right name for it sorry