peytonnicole58 peytonnicole58

07-12-2019
Biology

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atoms have how many protons and neutrons?

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neonpixie1284 neonpixie1284

07-12-2019

Answer:

The number of protons is the atomic number, and the number of protons plus neutrons is the atomic mass. For hydrogen, the atomic number is 1 because there is one proton and no neutrons. For helium, it is 4: two protons and two neutrons.

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