Periode-3-Element
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Uun't 3. periode faan't periodensüsteem san cheemisk elementen, diar trii elektroonenskelen haa. Jo iarst tau san fol besaat. Det traad koon tesken ian an aacht elektroonen haa. Det taal faan elektroonen uun't bütjenst elektroonenskel bestemet det walens (wäärdaghaid), an sodenang uk a eegenskapen faan det element.
 Tekst üüb Öömrang |
| Skööl | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| Hoodskööl | I | II | III | IV | V | VI | VII | VIII | ||||||||||
| Atoomnumer Sümbool |
11 Na |
12 Mg |
13 Al |
14 Si |
15 P |
16 S |
17 Cl |
18 Ar | ||||||||||
| Alkaalimetalen | Eerdalkaalimetalen | Boorskööl | Hualewmetalen | Nianmetalen | Halogeenen | Eedelgaasen |
| Elektroonenskel | Taal faan elektroonen | Beskriiwang | ||||
|---|---|---|---|---|---|---|
| Tuup | s-Orbital | p-Orbital | d-Orbital | f-Orbital | ||
| 1 | 2 | 2 | - | - | - | Banenst/iarst elektroonenskel |
| 2 | 8 | 2 | 6 | - | - | Ööder elektroonenskel |
| 3 | 1 bit 8 | 1 bit 2 | 0 bit 6 | - | - | Bütjenst/traad elektroonenskel (Walensskel) |
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