Electronic Configuration
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4 Terms
1
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Period
The amount of shells + How far down horizontally on the periodic table
NA (Sodium) in Period 3 and has three shells.
2
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Atomic Number
The number of protons in the nucleus of an atom (top number) + total number of electrons in all shells
Na = 11
3
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Group Number
The column number (vertical) on the periodic table + number of electrons in only the outershell
Na Group 1 = 1 electronic in the outershell
4
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What is electronic configuration?
The arrangement of electrons into shells.
Note 
Flashcards (48)