S-blok
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't s-blok is e verzoamelnoame vo die element'n woar dat er 'n s-subschelle bezig is van ipgevuld te word'n met elektroonn. 't Zyn de kolommn 1 en 2 van 't periodiek système met d' alkalimetoaln en d' eirdalkalimetoaln.
| 1 H | |
| 3 Li |
4 Be |
| 11 Na |
12 Mg |
| 19 K |
20 Ca |
| 37 Rb |
38 Sr |
| 55 Cs |
56 Ba |
| 87 Fr |
88 Ra |

Legende
| =Niet-metoaln | =Alkalimetoaln | =Eirdalkalimetoaln |
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