The Periodic Table and Periodic Law

Group A elements 3. Group B elements 4. Group 1A elements (except for hydrogen) 5. Group 2A elements 6. A column in the periodic table 7. A row in the periodic table 8. Group 7A elements 9. Group 8A elements 10. Atom or bonded group of atoms that has a positive or negative charge 11. Energy required to remove an electron from a gaseous atom 12. ................
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