Periodic Table Puzzle

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