Across
- 3. used for jewelry and is yellow and shiny
- 4. symbol Y
- 6. lack of this causes a deficiency disease called Goitre in human beings
- 8. number three in the periodic table
- 10. Symbol Mg
- 12. symbol ca
- 13. group 2 in the periodic table, atomic number 4
Down
- 1. Number one in the periodic table
- 2. when plants lack this, they get yellow leaves with dead spots
- 5. symbol hg
- 7. symbol sn
- 9. number 23 in the periodic table
- 11. somehow dangerous to human beings and makes us dizzy