Across
- 3. any metal in Group 1A of the periodic table
- 4. when elements are arranged in order increasing atomic number, there is a periodic repetition of their physical and chemical properties
- 8. the energy required to move and electron from an atom in its gaseous state
- 10. an atom or group of atoms that has a positive or negative charge
- 11. any metal in Group 2A of the periodic table
- 12. one-half the distance between the nuclei of two atoms of the same element when the atoms are joined
- 14. the ability of an atom to attract electrons when the atom is in a compound
- 15. a nonmetal in Group 7A of the periodic table
Down
- 1. one of the Group B elements in which the highest occupied s sublevel and a nearby d sublevel generally contain electrons
- 2. an element that tends to have properties that are similar to those of metals and nonmetals
- 5. any atom or group of atoms with a negative charge
- 6. and element in Group 8A of the period table the s and p sublevels of the highest energy level are filled
- 7. an element in the lanthanide or antinide series; the highest occupied s sublevel and nearby f sublevel of its atoms generally contain electrons
- 9. an element in the "A" group in the periodic table
- 13. any atom or group of atoms with a positive charge