Across
- 2. other name for Group IA elements, _____ metals
- 5. cylinder with 16 verstical sections arranged according to atomic mass, _____ helix
- 7. Sanskrit word which means “first after”
- 9. essential element to build and maintain teeth and bones
- 10. award given to John Newlands, _____ Medal by the Royal Society
- 11. electron attracting ability
- 16. total number of gaseous element
- 17. total number of metalloids
- 18. the element between calcium and strontium
- 20. from a Latin word which means “stranger”
Down
- 1. he was the first to group elements according to similar properties
- 3. meaning of the Latin word “Helios”
- 4. electron losing ability, M_____c property
- 6. element which acts as a disinfectant added to drinking water and swimming pool
- 8. element which acts as cofactor for the hemoglobin in the blood
- 12. element which is a major constituent of living things
- 13. every 8th element shares the same property, Law of _____
- 14. eka-silicon
- 15. atomic mass of the middle element is approximately equal to the average of the 1st and 2nd element, Dobereiner’s _____
- 19. Latin word which means “the lazy one”