AP Chemistry periodic notes
Subject:
Chemistry [1]
Tags:
Chemistry [2]
Physics [3]
Periodic Table [4]
Chemical bonding [5]
Atomic physics [7]
Valence electron [9]
ion [10]
Periodic trends [11]
Alkaline earth metal [12]
Chemical bond [13]
Technology [14]
Chapter 7 ? Periodic Properties of the Elements 7.1 Development of the Periodic Table ? Majority of elements discovered 1735-1843 ? Elements arranged to reflect trends in chemical and physical properties ? Periodic table arose from periodic patterns in electronic configurations o Valence orbitals o Trends in rows and columns ? Mendeleev and Meyer ? Modern periodic table 7.2 Effective Nuclear Charge Effective nuclear charge (Zeff) is the charge experienced by an electron on a many-electron atom. The effective nuclear charge is not the same as the charge on the nucleus because of the effect of the inner electrons. ? The electron is attracted to the nucleus, but repelled by electrons that shield or screen it from the full nuclear charge.