Upload
allene
View
50
Download
1
Embed Size (px)
DESCRIPTION
Chapter 14 Periodic Table. Classification of Elements Periodic Trends. Classification of Elements. Dmitri Mendeleev (1871) first to organize the Periodic table well. Electron configurations are very important in organizing the Periodic Table - PowerPoint PPT Presentation
Citation preview
Chapter 14 Periodic Table
Classification of Elements
Periodic Trends
Classification of Elements
Dmitri Mendeleev (1871) first to organize the Periodic table well.
Electron configurations are very important in organizing the Periodic Table
All elements in the same group have the same valence electron configuration
Mendeleev Periodic Table 1871
Electron Configuration of Groups
Noble Gases – outermost s and p orbitals filledAkali Metals – outermost s has one electronAlkaline Earth Metals - outermost s has two electron (filled)Halogens – Outermost s filled, outer most p has 5 electrons
Electron Configuration of Groups
Transition Metals – Outermost s filled, d ranges from one to ten electrons
Electron Configuration of Groups
Describe each of the following in terms of valence electrons:Group 13Group 14Group 15Group 16
Periodic Trends
Periodic Trends
Atomic Radius Increases as you move down a groupDecreases as you move from left to right
across a period
Periodic Trends
Ionization Energy Generally increases across a periodGenerally decreases down a group
Periodic Trends
ElectronegativityDecreases as you move down a group Increases as you move from left to right
across a period
Periodic Trends
Ionic Size Increases as you move down a groupCations decrease as you move from left to
right across a periodAnions increase as you move from left to
right across a period