Early Periodic Table Flashcards
1
Q
What did Mendeleev and Newlands use to arrange the periodic table?
A
Atomic weight
2
Q
Why did people criticise the work of Newlands?
A
- His groups contained elements that didn’t have similar properties
- He mixed up metals and non metals
- He didn’t leave gaps for undiscovered elements
3
Q
What did Mendeleev do that Newland’s didn’t?
A
Leave gaps for undiscovered elements and predicting their properties.
