who devised the periodic table and when
Dmitri Mendeleev in the 1860s
where are metals arranged o
on the left side
where are non metals found
on the far right hand side
where are semi metals found
in the region between metals and non metals
what is group 1 called
Alkali metals
Group 2
Alkaline earth metals
group 3-12
Transition metals
Group 17
halogens
group 18
noble gases
gases
hydrogen
helium
nitrogen
oxygen
Fluorine
Neon
Chlorine
Argon
Krypton
Xenon
liquids
bromine
mercury