The mass of an atom is nearly all because of the proloads and also neutrons in the nucleus. The atomic mass number is the number of protons added to the number of neutrons and also is provided the symbol A. For this atom of lithium, A equals 6.
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The variety of proloads in the nucleus of an atom is called the atomic number. It has actually the symbol Z. The atomic number of lithium is 3.
We can show the atomic mass number and the atomic number with the symbol for the element.
A is the variety of neutrons plus protons in the nucleus.However before, we already understand that tright here are 7 prolots. Thus, tright here must be 8 neutrons in the nucleus to add as much as 15.
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