Crossword

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Across
  1. 2. Metal extracted from bauxite ore
  2. 5. Which element has the highest electrical conductivity
  3. 10. Arrangement of elements in Mendeleev’s periodic table was based on
  4. 11. Element showing anomalous electronic configuration 3d⁵4s¹
  5. 12. The only liquid metal at room temperature
  6. 13. Element with the highest ionization enthalpy
  7. 14. The only liquid non-metal at room temperature
  8. 16. Element with atomic number 45
  9. 17. Noble gas used in advertising signs
Down
  1. 1. Most abundant element in the Earth’s crust
  2. 3. Cause of similar atomic radii of zirconium and hafnium
  3. 4. Element essential for chlorophyll formation in plants
  4. 5. Highly reactive alkali metal stored under kerosene
  5. 6. Nitrogen family is also known as
  6. 7. Element with the highest electron affinity
  7. 8. Naturally radioactive noble gas
  8. 9. Least electronegative element
  9. 11. The element used as the standard for atomic mass calculations
  10. 14. Name one metalloid other than silicon and germanium
  11. 15. The lightest metal in the periodic table