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Periodic Table 5A

History of the Periodic Table

QuestionAnswer
A repeating pattern periodic
How did Mendeleev arrange the elements in his first published periodic table Vertical
How is the atomic mass of each element indicated in Mendeleev's 1st periodic table By the number following the elements symbol
In Mendeleev's early periodic tables how were the unknown elements indicated by a dash
How did Mendeleev arrange the elements in the first table Similar properties were grouped together
What 3 elements were missing from Mendeleev's table but were later discovered scandium- Sc, gallium- Ga, and germanium- Ge
What did Moseley work lead to The Modern definition of atomic number and the recognition that atomic number(number of protons) NOT atomic mass is the basis for the organization of the periodic table
The physical and chemical properties of the elements are periodic functions of their atomic numbers Periodic Law
The bold stair step line on the periodic table separates Metals on the left from Non-Metals on the right
Johann Dobereiner Dobereiner's triads groups of 3 elements with similar properties
Created by: IcanDance
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