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Electron configurations

Can you figure out how many electrons each atom has and where they are supposed to go?
AB
Hydrogenone electron
Sodiumeleven electrons
Chlorineseventeen electrons
atomic numberthe number of protons in an atom
Mass numbertotal number of protons and neutrons
first energy levelholds two electrons
second energy levelholds eight electrons
the outer shellvalence
weighs practically nothingelectron
they weigh 1 AMUprotons and electrons
positive chargeproton
negative chargeelectron
no chargeneutron
in the nucleusProtons and Neutrons
outside the nucleusNeutrons
Ice meltingphysical change
hydrogen plus oxygenchemical change
change of colorchemical change
odor (gas released0chemical change

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