2.1 development of the periodic table Flashcards
1
Q
What was one of the first suggestions about the periodic table
A
-from john dalton
arranged elements in order of their atomic weights
2
Q
What book did John dalton publish in 1808
A
‘a new system of chemical philosophy’
(a table of elements)
3
Q
what happened in 1864
A
john newlands built on daltons ideas
named law of octaves
4
Q
Who published the best periodic table in 1869
A
Dmitri Mendeleev
-50 elements had been identified
-arranged in a table
-in order of atomic weights
5
Q
what did mendeleev do
A
he left gaps for unknown elements which were discovered later by scientists
6
Q
A
