Chapter 5: The Periodic Law

123456789101112131415161718192021222324252627282930
Across
  1. 3. An atom or group of bonded atoms that has a positive or negative charge.
  2. 4. Appearing or occurring at intervals.
  3. 8. A measure of the ability of an atom in a chemical compound to attract electrons from another atom in the compound.
  4. 13. Metals Group 1, consists of Hydrogen (H), Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs), and Francium (Fr).
  5. 16. Consists of the elements in Groups 3-12.
  6. 18. Element that is the most electronegative.
  7. 20. The energy required to remove one electron from a neutral atom of an element.
  8. 22. Group 18, consists of Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), and Radon (Rn).
  9. 25. devised the periodic classification of the chemical elements, in which the elements were arranged in order of increasing atomic weight.
  10. 26. Any process that results in the formation of an ion.
  11. 28. Element that has the smallest atomic radius.
  12. 29. Block that contains the elements of Lanthanides and Actinides.
  13. 30. An arrangement of the elements in order of their atomic numbers so that elements with similar properties fall in the same column, or group.
Down
  1. 1. Group 2, consists of Beryllium (Be), Magnesium (Mg), Calcium (Ca), Strontium (Sr), Barium (Ba), and Radium (Ra).
  2. 2. A negative ion.
  3. 5. The 14 elements with atomic numbers from 90 (Thorium, Th) to 103 (Lawrencium, Lr)
  4. 6. Block that contains the elements in Groups 3-12.
  5. 7. The s-block and p-block elements together are called.
  6. 9. The energy change that occurs when an electron is acquired by a neutral atom.
  7. 10. A general direction in which something is developing or changing.
  8. 11. A positive ion.
  9. 12. devised the periodic table in which the elements were arranged in increasing order of nuclear charge.
  10. 14. The 14 elements with atomic numbers from 58 (Cerium, Ce) to 71 (Lutetium, Lu)
  11. 15. Group 17, consists of Fluorine (F), Chlorine (Cl), Bromine (Br), Iodine (I), and Astatine (At).
  12. 17. Block that contains the elements in Group 1 and Group 2.
  13. 19. The electrons of the outer shell which are available to be lost, gained, or shared in the formation of chemical compounds.
  14. 21. Block that contains the elements in Groups 13-18.
  15. 23. The physical and chemical properties of the elements are periodic functions of their atomic numbers.
  16. 24. Element that has the largest atomic radius.
  17. 27. One-half the distance between the nuclei of identical atoms that are bonded together.