3.1 .Development of periodic table
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9 Terms
He creaton the groups that were known as Dobereiner’s Triad
Johann Wolfgang Dobereiner
He noticed that certain group of elements having similar properties seem to come in groups of three. What do you call that Three Groups?
Dobereiner’s Triad
How many triads were successfuly classified?
3
Who reported the law of octaves
Johann Alexander Reina Newlands
What law did Johann Alexander Reina Newlands reported?
Law of octaves
Who is the father of periodic table?
Dmitri Mendeleev
Who established the periodicity of elements based on their physical properties or atomic value
Julius Lothar Meyer
Who used the element’s chemical properties to establish the pattern
Dmitru Mendeleev
He used the number rather than atomic mass in arranging the elements. He firmly established the relationship between atomic number and the change of the atomic nucleus and he predicted the existance of the four new elements.
Henry G.J. Mosely
Note 
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