Periodic table

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Across
  1. 2. The elements in a column form is a _ _ _ _ _.
  2. 4. The number under the Chemical Symbol.
  3. 5. the horizontal line on the periodic table.
  4. 7. opposite traits of Metals.
  5. 8. The letter below the atomic number.
Down
  1. 1. The basic building block of matter.
  2. 3. An arrangement of elements showing the repeating pattern
  3. 4. the number of protons in the nucleus of atom is the________.
  4. 6. has the character of Shiny,And malleable.