Across
- 6. The most abundant gas in the air.
- 7. What name is given to the horizontal rows?
- 9. An element Which in 2A group of 4th period.
- 10. An element which has a symbol : In
Down
- 1. What is the element with the symbol Fr?
- 2. An element which in 1A group of 2nd period.
- 3. What name is given to the vertical columns?
- 4. An element which has a symbol : As
- 5. An element which in 4A group of 3rd period.
- 8. An element which in 3A group of 3rd period.