Across
- 7. The most abundant metal in the earth’s crust.
- 8. The most electronegative element.
- 9. The only one liquid state metal at room temperature.
- 10. The most abundant gas in the air.
Down
- 1. Which element has the lowest atomic mass?
- 2. An Alkali metal element in 2nd period.
- 3. An Alkaline earth metal element in 4th period.
- 4. What is the element with the symbol W?
- 5. An element which has a symbol : Cu
- 6. An element which in 4A group of 3rd period.