The top documents tagged [beryllium atomic number]

The Elements Hydrogen HeLi…. Tnx Joe Keola KH6BFZ for starting me out on this! 73 (no, this is not Joe) Менделеев Жить!

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PRACTICE DRAWING ATOMS. DRAWING ATOMS RULES PROTONS = Atomic number ELECTRONS = Atomic number NEUTRONS = mass number – atomic number 1 st level can hold.

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Warm Up

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