How well do you know the first 36 elements of the Periodic Table?

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Across
  1. 2. - it is a low-abundance element in the Solar system and in the Earth's crust
  2. 5. - it is a soft, malleable, and ductile metal with very high thermal and electrical conductivity
  3. 10. -is a chemical element with symbol As and atomic number 33
  4. 13. - it is the third-most abundant gas in the Earth's atmosphere
  5. 14. - at room temperature, it evaporates readily to form a red to amber coloured gas
  6. 15. - it is a chemical element with the symbol Si and atomic number 14
  7. 17. - like nickel, it is found in the Earth's crust only in chemically combined form, save for small deposits found in alloys of natural meteoric iron
  8. 18. - it is a silvery-white, soft, nonmagnetic and ductile metal in the boron group
  9. 19. - it is a chemical element with symbol Be and atomic number 4
  10. 23. - is a chemical element with symbol K
  11. 28. - is a chemical element with symbol Ti and atomic number 22
  12. 29. - it is a member of group 18 (noble gases) elements
  13. 30. - a chemical element with symbol Li
  14. 33. - another name of this element is sulphur
  15. 34. - historically, manganese is named for pyrolusite
  16. 35. - it is a slightly brittle metal at room temperature and has a blue-silvery appearance when oxidation is removed
  17. 36. - is a chemical element with the symbol Na
Down
  1. 1. - it is a metal, that belongs to the first transition series and group 8 of the periodic table
  2. 3. - it is a silvery-white lustrous metal with a slight golden tinge
  3. 4. - is present in most of the deposits of rare-earth and uranium compounds, but it is extracted from these ores in only a few mines worldwide
  4. 6. - it is the fifth most abundant element in Earth's crust and the third most abundant metal, after iron and aluminium
  5. 7. - it is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air
  6. 8. - t has a concentration in the Earth's crust of about one gram per kilogram (compare copper at about 0.06 grams)
  7. 9. - the second-lightest of the halogens, it appears between fluorine and bromine in the periodic table and its properties are mostly intermediate between them
  8. 11. - it is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds
  9. 12. - it is a lustrous, hard-brittle, grayish-white metalloid in the carbon group, chemically similar to its group neighbours silicon and tin
  10. 16. - it is a member of the chalcogen group on the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds
  11. 20. - it is the ninth most abundant element in the universe
  12. 21. - it is the first element in group 6
  13. 22. - it is a hard, silvery-grey, ductile, malleable transition metal
  14. 24. - It is a nonmetal (more rarely considered a metalloid) with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium
  15. 25. - it is a chemical element with the symbol F and atomic number 9
  16. 26. - the first element in the Periodic Table
  17. 27. - it was first discovered and isolated by Scottish physician Daniel Rutherford in 1772.
  18. 31. - it is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas
  19. 32. - it is a chemical element with symbol Ga and atomic number 31