Bórhópur
frumefni í flokki 13 From Wikipedia, the free encyclopedia
Bórhópur er þrettándi flokkur í lotukerfinu.
| Flokkur → ↓ Lota |
13 |
| 2 | 5 B |
| 3 | 13 Al |
| 4 | 31 Ga |
| 5 | 49 In |
| 6 | 81 Tl |
| 7 | 113 Uut |
Bór er fyrsta efnið í flokknum og er málmungur, restin eru tregir málmar.
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