Across
- 2. gas To which element group does argon belong?
- 4. The group has one of valence electron
- 5. Which element has the lowest atomic mass.
- 7. Which element has an atomic number of 26.
- 8. It’s semi-metal and atomic number is 14
- 9. Earth The group readily lose two electrons to form cations with a 2+ charge.
- 11. It’s only metal element that is liquid at room temperature
Down
- 1. The most electronegative element.
- 3. The group have high negative value of electron affinity.
- 6. The most gas in the air.
- 10. What is the alkali metal on period 2.