DondreLittle271 DondreLittle271

22-10-2019
Chemistry

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what are The numbers on The periodic Table

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22-10-2019

Answer:

The number above the symbol is the atomic mass (or atomic weight). This is the total number of protons and neutrons in an atom. The number below the symbol is the atomic number and this reflects the number of protons in the nucleus of each element's atom. Every element has a unique atomic number.

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