tomas485 tomas485

04-01-2022
Chemistry

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Write the symbol for every chemical element that has atomic number greater than 8 and atomic mass less than 25.5 u.

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3060XLXO 3060XLXO

04-01-2022

F atomic number 9, mass 19

Ne atomic number 10, mass 20

Na atomic number 11, mass 23

Mg atomic number 12, mass 24

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