Across
- 3. Which element has the lowest atomic mass.
- 4. It’s semi-metal and atomic number is 14
- 5. Which element has an atomic number of 26.
- 6. krypton and radon.
- 8. Earth The group readily lose two electrons to
- 9. What is the alkali metal on period 2?
- 11. The most electronegative element.
- 13. cations with a 2+ charge.
Down
- 1. gas This chemical series contain helium, neon,
- 2. It is only metal element that is liquid at
- 3. The group have high negative value of electron affinity.
- 7. The most gas in the air.
- 10. The group are very reactive metals that do not occur freely in nature.
- 12. temperature.