History fo the Peridoc Table Unit 3

In the Early 1800s;

·         They could only categorise elements by their physical and chemical properties and their relative atomic mass.

(They had NO idea of atomic structure, atomic number and the properties within an atom)

They elements were arranged in order of atomic mass.

Newlands Law of Octaves;

·         He was the first scientist to try and order the elements in 1864.

·         He noticed that every 8^th…