Periodic Properties of the Elements. Chapter 7. 7.1 Development of the Periodic Table. 1 st developed by Dmitri Mendeleev (Russia) & Lothar Meyer (Germany) on the basis of the similarity in chemical and physical properties Mendeleev … started by organizing elements by increasing mass.
Periodic Properties of the Elements
Periodic Trends in Ionization Energies
Pg. 239 --Table 7.3 Characteristic Properties of Metals and Nonmetals
Group 1A: The Alkali Metals
Group 2A: Alkaline Earth Metals
Group 6A: The Oxygen Group