Periodic Table Puzzle

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Across
  1. 6. Doesn't behave like other elements I have 0 neutrons.
  2. 7. In its neutral state, the electron configuration is 1s2 2s2 2p6 3s2 3p6 4s2 3d5.
  3. 9. Is essential to integrated circuit chips used in most modern technology such as smartphones and other computers
  4. 10. Liquid metal at room temperature.
  5. 11. The alkali metal present in period 3.
  6. 13. I am the head of the 14th group; known as the “basis of life”.
  7. 16. A total of 4 energy levels occupied by electrons but only 1 valence electron.
  8. 17. Present in Group 11 and Period 6 of the Periodic Table.
  9. 18. I have 2 electrons in the first shell, 8 in the second shell, and 6 in the third shell.
  10. 19. In a neutral atom, I have 26 electrons.
Down
  1. 1. Halogen with the electron configuration 1s2 2s2 2p5.
  2. 2. The only noble gas with less than 8 valence electrons.
  3. 3. Alkaline earth metal with its valence electrons in the 5th energy level.
  4. 4. Has 20 neutrons when the isotopic mass is 40 and is found in your teeth and bones.
  5. 5. The noble gas notation at the neutral state is [Ne] 3s2 3p3.
  6. 8. A member of the boron family and the most abundant metal in the Earth’s crust.
  7. 12. Has 5 valence electrons in the second energy level.
  8. 14. A transition metal with 28 protons.
  9. 15. My atomic mass is 35.
  10. 18. All atoms of this element have 47 protons.