The atomic number of an atom is the number of protons in that
atom. For example, the atomic number of hydrogen is 1 because one
hydrogen atom have one proton.
The atomic number of an atom is the number of protons in that
atom. For example, the atomic number of hydrogen is 1 because one
hydrogen atom have one proton.
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Yes, it is true.
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An atom does not have to have equal numbers of protons and
neutrons.