periodic table
Across
- 5. a strong, hard magnetic silvery-grey metal the chemical element of atomic number 26
- 6. a yellow combustible nonmetal the chemical element of atomic number 16
- 7. a soft grey metal the chemical element of atomic number 20
- 10. a nonmetal with semiconducting properties the chemical element of atomic number 14
- 11. a red-brown metal the chemical element of atomic number 29
- 14. a rare radioactive metal of the alkaline earth series the chemical element of atomic number 88
- 16. a colorless odorless unreactive gas that forms 78% of the earths atmosphere the chemical element of atomic number 7
- 17. an inert gaseous element of the noble gas group the chemical element of atomic number 18
- 18. a hard silvery-white magnetic metal the chemical element of atomic number 27
- 19. an inert gaseous element of the noble gas group the chemical element of atomic number 10
Down
- 1. colorless, odorless, highly flammable gas, the chemical element of atomic number 1
- 2. a yellow precious metal, the chemical element of atomic number 79
- 3. a soft silver- white reactive metal of the alkali metal group the chemical element of atomic number 11
- 4. a member of the noble gas series it is obtained by distillation of liquid air the chemical element of atomic number 36
- 7. a nonmetal which has two forms diamond and graphite the chemical element of atomic number 6
- 8. a silvery-white metal the chemical element of atomic number 28
- 9. a nonmetallic solid the chemical element of atomic number 5
- 12. a colorless, odorless reactive gas the chemical element of atomic number 8
- 13. a silvery-while metal that is a constituent of brass the chemical element of atomic number 30
- 15. a rare radioactive gas belonging to the noble gas series the chemical element of atomic number 86