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Mendeleev
Patterns in the elements’ properties. -Apex
The properties of the elements are changed.
Sulphur and helium have entirely different properties. Sulphur has properties similar to group 16 elements. Helium has properties similar to group 18 elements.
Elements in the same group (column) have the same properties. All the elements in group one have similar properties. All the elements in group two have similar properties. And so on...
Isomorph's
There is no general relationship.
There is no general relationship.
There is no general relationship.
No because the elements that make up the compounds have different properties than the compound's properties.
Mendeleev
the properties of a compound are not the same as the elements that form them.
All elements have several properties.
Patterns in the elements’ properties. -Apex
The properties of the compound will differ from the properties of the elements of which it is made.
No two elements have the same properties.
The properties of the elements are changed.