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Atoms 1 - 20
Electron arrangements of the first 20 elements
Question | Answer |
---|---|
hydrogen | 1 |
helium | 2 |
lithium | 2,1 |
beryllium | 2,2 |
boron | 2,3 |
carbon | 2,4 |
nitrogen | 2,5 |
oxygen | 2,6 |
fluorine | 2,7 |
neon | 2,8 |
sodium | 2,8,1 |
magnesium | 2,8,2 |
aluminium | 2,8,3 |
silicon | 2,8,4 |
phosphorus | 2,8,5 |
sulfur | 2,8,6 |
chlorine | 2,8,7 |
argon | 2,8,8 |
potassium | 2,8,8,1 |
calcium | 2,8,8,2 |