history of the periodic table Flashcards
(7 cards)
1
Q
who arranged elements in order of atomic weight?
A
John Newland
2
Q
who grouped known elements together?
A
Dimitri Mendeleev
3
Q
who’s table was constructed in 7 groups of 8?
A
John Newland
4
Q
who’s groups went down the table and periods along?
A
John Newland
5
Q
who switched the order of known elements?
A
Dimitri Mendeleev
6
Q
why did Mendeleev leave gaps?
A
for elements not yet discovered
7
Q
who predicted properties of missing elements?
A
Dimitri Mendeleev
