William McCorry Chemisty Crossword

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Across
  1. 4. Neutrally charged sub-atomic particles
  2. 8. The most reactive elements on the periodic table.
  3. 10. Shortest half life of any element
  4. 11. Positively charged sub-atomic particles
  5. 13. Vertical columns on Periodic table
  6. 14. The heaviest element that can be produced in a star
  7. 15. Silvery white, very hard transition metal, but is softer and more ductile than tungsten
Down
  1. 1. soft, malleable, ductile, silver-white metal.is naturally found in sediments.: it oxidizes rapidly in air and it reacts with water to form the hydroxide.
  2. 2. Negatively charged sub-atomic particles
  3. 3. A charged particle
  4. 5. It is a bright, hard silvery metal. It exists in its trivalent state. It is stable in air at normal temperatures. It forms oxide with moist air. It is the hardest and most brittle rare earth element.
  5. 6. The outermost electron shell
  6. 7. Horizontal columns on periodic table
  7. 9. Extremally Radioactive element. Isotopes include bismuth, polonium, or radon.
  8. 12. soft, malleable, ductile, silver-gray metal member of the lanthanide group of the periodic table. It is reasonably stable in air, but it is slowly oxidised and it reacts with cold water.