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