Sagot :
Answer:
The number of protons in the nucleus of the atom is equal to the atomic number (Z).
Explanation:
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Answer:
The number of protons is the ATOMIC NUMBER, and the number of protons plus neutrons is the atomic mass. For hydrogen, the atomic mass is 1 because there is one proton and no neutrons. For helium, it is 4: two protons and two neutrons
Explanation:
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