Chapter 5: The Periodic Law

Edit Answers
1234567891011121314151617181920212223242526272829
Across
  1. 3. The 14 elements with atomic numbers from 90 (Thorium, Th) to 103 (Lawrencium, Lr)
  2. 5. Metals Group 1, consists of Hydrogen (H), Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs), and Francium (Fr).
  3. 8. Any process that results in the formation of an ion.
  4. 10. devised the periodic classification of the chemical elements, in which the elements were arranged in order of increasing atomic weight.
  5. 11. Block that contains the elements of Lanthanides and Actinides.
  6. 13. Block that contains the elements in Groups 3-12.
  7. 15. Element that has the smallest atomic radius.
  8. 16. The electrons of the outer shell which are available to be lost, gained, or shared in the formation of chemical compounds.
  9. 17. The energy change that occurs when an electron is acquired by a neutral atom.
  10. 18. devised the periodic table in which the elements were arranged in increasing order of nuclear charge.
  11. 20. A positive ion.
  12. 21. Block that contains the elements in Groups 13-18.
  13. 22. An atom or group of bonded atoms that has a positive or negative charge.
  14. 23. Group 17, consists of Fluorine (F), Chlorine (Cl), Bromine (Br), Iodine (I), and Astatine (At).
  15. 25. Group 18, consists of Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), and Radon (Rn).
  16. 27. A negative ion.
  17. 28. Consists of the elements in Groups 3-12.
  18. 29. The physical and chemical properties of the elements are periodic functions of their atomic numbers.
Down
  1. 1. Element that has the largest atomic radius.
  2. 2. The s-block and p-block elements together are called.
  3. 4. Block that contains the elements in Group 1 and Group 2.
  4. 6. The 14 elements with atomic numbers from 58 (Cerium, Ce) to 71 (Lutetium, Lu)
  5. 7. One-half the distance between the nuclei of identical atoms that are bonded together.
  6. 9. Group 2, consists of Beryllium (Be), Magnesium (Mg), Calcium (Ca), Strontium (Sr), Barium (Ba), and Radium (Ra).
  7. 12. Element that is the most electronegative.
  8. 14. An arrangement of the elements in order of their atomic numbers so that elements with similar properties fall in the same column, or group.
  9. 17. A measure of the ability of an atom in a chemical compound to attract electrons from another atom in the compound.
  10. 19. The energy required to remove one electron from a neutral atom of an element.
  11. 24. A general direction in which something is developing or changing.
  12. 26. Appearing or occurring at intervals.