Chapter 7 Electron Configuration and the Periodic Table
Chapter 7
Electron Configuration and the Periodic Table
Copyright McGraw-Hill 2009
1
7.1 Development of the
Periodic Table
? 1864 - John Newlands - Law of Octaves- every 8th element had similar properties when arranged by atomic masses (not true past Ca)
? 1869 - Dmitri Mendeleev & Lothar Meyer - independently proposed idea of periodicity (recurrence of properties)
Copyright McGraw-Hill 2009
2
? Mendeleev
? Grouped elements (66) according to properties
? Predicted properties for elements not yet discovered
? Though a good model, Mendeleev could not explain inconsistencies, for instance, all elements were not in order according to atomic mass
Copyright McGraw-Hill 2009
3
? 1913 - Henry Moseley explained the discrepancy
? Discovered correlation between number
of protons (atomic number) and frequency of X rays generated
? Today, elements are arranged in order of increasing atomic number
Copyright McGraw-Hill 2009
4
Periodic Table by Dates of Discovery
Copyright McGraw-Hill 2009
5
................
................
In order to avoid copyright disputes, this page is only a partial summary.
To fulfill the demand for quickly locating and searching documents.
It is intelligent file search solution for home and business.
Related download
- chapter 7 resource masters loma prieta joint union
- chapter 7 achieving good mental health
- chapter 7 the normal probability distribution
- chapter 7 posting journal entries to
- chapter 7 volcanoes
- weathering and soil mrs wallace s science site
- student activity workbook
- chapter 7 central america and the caribbean islands
- vital signs pulse blood pressure chapter 7
- chapter 6 lesson 7 energy changes in chemical reactions
Related searches
- the periodic table symbols and names
- memorize the periodic table game
- periods on the periodic table represent elements
- the periodic table song 2018 update lyrics
- groups on the periodic table meaning
- metals in the periodic table list
- what are the periodic table groups
- the periodic table worksheet pdf
- names of the periodic table of elements
- what is the periodic table for kids
- labeling the periodic table worksheet
- learning the periodic table videos