periodic properties

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Across
  1. 1. Also known as eka-aluminum
  2. 4. Which chemist profounded the law of octaves?
  3. 6. name the element: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d¹⁰
  4. 7. Number of periods in Mendeleev's periodic table (in words)
  5. 8. Also known as eka-silicon
Down
  1. 2. Atomic radius ______ when going for top to bottom of a group
  2. 3. name the element of atomic number 111
  3. 5. Who was the first scientist to consider the idea of pthe roperties of elements