The periodic table and its trend

Edit Answers
123456789101112131415
Across
  1. 2. Negatively charged particles that orbit an atom's nucleus.
  2. 7. A column in the periodic table with similar chemical properties.
  3. 8. The process of an atom gaining or losing electrons to form ions.
  4. 10. A horizontal row in the periodic table, with elements sharing the same electron shell count.
  5. 13. The effect where inner electrons reduce the attraction of the nucleus on outer electrons.
  6. 14. Elements that are shiny, malleable, and good conductors of heat and electricity.
  7. 15. Gases in Group 18, chemically inert due to full electron shells.
Down
  1. 1. The ability of an atom to attract electrons in a bond.
  2. 3. Reactive metals in Group 1, like sodium and potassium.
  3. 4. Metals in the center of the periodic table, with varying oxidation states.
  4. 5. Reactive elements in Group 17, like chlorine and fluorine.
  5. 6. A predictable pattern in element properties across the periodic table.
  6. 9. The mass per unit volume of a substance.
  7. 11. The size of an atom, measured from the nucleus to the outermost electron.
  8. 12. Creator of the periodic table, organized elements by atomic mass.