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Author: piqué sira
Description:
Keywords: , , , , , , online teaching

Content:
Definitions:
0. hidrogen
1. xenó
2. Ferro
3. Seleni
4. Bari
5. liti
6. oxigen
7. sodi
8. clor
9. sofre
10. potassi
11. alumini
12. bor
13. nitrogen
14. cesi
15. plom

Answers:
0. Ba
1. cs
2. H
3. Li
4. O
5. S
6. xe
7. B
8. Cl
9. Pb
10. K
11. Se
12. Al
13. na
14. N
15. fe
.