This is my awesome Chemistry Crossword (that is worth 10 class points)

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Across
  1. 4. what do you call a horizontal row?
  2. 5. which way does electron affinity increase?
  3. 7. which direction (lateral) does the atomic radius decrease?
  4. 8. which metals can have both a negative a positive charge?
  5. 9. which group is known as 4f?
  6. 10. how many valance electrons are in the element bromine?
  7. 12. how many electrons does the element H have?
  8. 13. which direction (lateral) does the atomic radius increase?
Down
  1. 1. what do you call a vertical row?
  2. 2. which family is neither metal nor nonmetal?
  3. 3. which family is considered to have 7 valence electrons?
  4. 6. which group is known as 5f?
  5. 11. which family is known to be the least reactive?