Chapter 5: The Periodic Law

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