Unit 5 Periodic Table Vocab

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Across
  1. 2. half reaction in which a chemical species decreases its oxidation number, generally by gaining electrons.
  2. 3. Effect the electron and the nucleus in an atom have a decrease in attraction which changes the nuclear charge
  3. 9. ion with a positive electrical charge.
  4. 12. loss of electrons by an atom, molecule or ion in a chemical reaction.
  5. 14. The ability of an atom to attract electrons
  6. 16. Energy The energy required to remove an electron from an atom
  7. 17. an ion with a negative electrical charge.
Down
  1. 1. recurring variations in element properties with increasing atomic number due to trends in atomic structure.
  2. 4. a vertical column on the periodic table consisting of elements that share periodic properties.
  3. 5. Properties are Similar to Both Metals and Nonmetals
  4. 6. Electron outer electron most likely to participate in bond formation or a chemical reaction.
  5. 7. horizontal row of the periodic table; elements with the same highest unexcited electron energy level
  6. 8. Good Conductors, Solid at Room Temperature, Ductile and Malleable
  7. 10. Poor Conductors, Most are Gases at Room Temperature
  8. 11. State the difference between the number of electrons in an atom in a compound compared with the number of electrons in a neutral atom of the element.
  9. 13. Radii distance away from the nucleus. Increases going from top to bottom and decreases going across the periodic table.
  10. 15. Radii distance away from the central atom. Increases going from top to bottom and decreases across the periodic table.