Similarities and Differences

Newlands’ Table Meneleev' Table
Ordered elements by atomic weight   Ordered elements by atomic weight

Included only the elements known at the time Left gaps for elements he predicted would be discovered later

Maintained a strict order of atomic weights   Swapped the order of some elements if that fitted their properties better

Every eighth element had similar properties   Elements in groups had similar properties

Was criticised by other scientists for grouping   Was seen as a curiosity to begin with, but then as a useful tool when some elements with others when they were    the predicted elements were discovered later
obviously very different to each other

	Created by Elizabeth W about 11 years ago

GCSE Science (Chemistry) Note on The Early Periodic Table C3.1, created by Elizabeth W on 28/10/2013.