Development of the Periodic Table

Johann Doberiner
Arranged elements in triads - Could predict elements properties using his triads.
1 of 5
John Newlands
Arranged elements in order of atomic mass - Discovered every 8th element had similar properties (law of octaves).
2 of 5
Dimitri Mendeleev
Arranged using atomic mass, left gaps for undiscovered elements
3 of 5
Henry Mosley
Used atomic number instead of mass to arrange his table, knowledge of isotopes gave evidence to support this.
4 of 5
In chronological order, which order do these scientists come in?
Johann Doberiner, John Newlands, Dimitri Meneleev, Henry Mosley
5 of 5

Other cards in this set

Card 2

Front

Arranged elements in order of atomic mass - Discovered every 8th element had similar properties (law of octaves).

Back

John Newlands

Card 3

Front

Arranged using atomic mass, left gaps for undiscovered elements

Back

Preview of the back of card 3

Card 4

Front

Used atomic number instead of mass to arrange his table, knowledge of isotopes gave evidence to support this.

Back

Preview of the back of card 4

Card 5

Front

Johann Doberiner, John Newlands, Dimitri Meneleev, Henry Mosley

Back

Preview of the back of card 5

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