Across
- 1. [Xe] 4f14 5d10 6s2 6p3
- 6. Elements on the staircase that have the properties of both metals and non-metals
- 8. measure of the ability of an atom in a chemical compound to attract electrons
- 9. [Rn] 5f3 6d1 7s2
- 11. a column in the Periodic Table
- 13. elements that all other elements want to have the same number of electrons as they do
- 15. a row on the periodic table
- 16. Metals with atomic number 90 to 103
- 18. electrons found in the outer shell of an atom
- 20. Metals with atomic numbers 58 to 71
- 22. Trend observed in a Period or a Group of elements
Down
- 2. Russian Chemist who began idea of Periodic table during the 19th century
- 3. Column 1 family
- 4. One-half the distance between the nuclei of identical atoms (such as Cl2) that are bonded together
- 5. energy change that occurs when an electron is acquired by a neutral atom
- 7. Energy required to remove one electron from a neutral atom of an element
- 10. Family in column 17
- 12. positive ion
- 14. when an atom loses or gains electron to become an anion or a cation
- 17. [Ar} 3d10 4s2 4p2
- 19. negative ion
- 21. a column in the Periodic Table
