Dmitri Mendeleev in 1869
A precursor of the modern perodic table was Alexandre Emolie Beguyer de Chancourtois, in 1862.
I think it was Mendaleev's periodic table.
Phosphorus
meercury , lead
Copper
Search: Groups on Periodic Table on google.
check out an interesting periodic table at www.calculatoredge.com
J
Francium
check out this amazing Perodic table at www.calculatoredge.com
The periodic table of elements arranges all of the known chemical elements.
At last count we were up to 114.