Unit 3: Periodicity
Presentation
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Chemistry
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11th Grade
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Practice Problem
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Hard
Erwin Lum
FREE Resource
5 Slides • 0 Questions
1
Classification of Elements and Periodicity in Properties
11CBSE: Chemistry
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Law of Triads (Johann Dobereiner):
Middle element of each of the Triads had an atomic weight about halfway between the atomic weights of the other two.
Genesis of Periodic Classification
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Law of Octaves (John Alexander Newlands):
Every eighth element had properties similar to the first element.
Genesis of Periodic Classification
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The properties of the elements are a periodic function of their atomic weights.
.
The physical and chemical properties of the elements are periodic functions of their atomic numbers.
Mendeleev's Periodic Law
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Classification of Elements and Periodicity in Properties
11CBSE: Chemistry
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