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The Periodic Table
The Periodic Table
The Periodic Table
- Symbol: Na
- Group: I
- Period: 3
- Relative Atomic Mass: 23
- Atomic Number: 11
- Status: Metal
Sodium
23
11
O
H
The Group (column) Number =
the number of electrons on the outer shell of the atom
The Period (row) Number =
the number of shells on the atom
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