The Periodic Table

The Periodic Table

The periodic table is a special chart of all the elements discovered. In 1869, the Russian chemist Dmitri Mendeleev published the first version of this table. He arranged the elements in order of increasing atomic mass. Mendeleev arranged the elements in columns and rows; elements in columns and rows all share similar characteristics. He left some places in his table blank because some elements had not yet been discovered! [LM] {NR}
The Periodic Table

H
Alkali Metals

Li
Na
K
Rb
Cs
Fr

Alkaline Earth Metals

Be
Mg
Ca
Sr
Ba
Ra

Transition Metals

Sc
Y
Ti
Zr
Hf
Ku
V
Nb
Ta
Ha
Cr
Mo
W
Mn
Tc
Re
Fe
Ru
Os
Co
Rh
Ir
Ni
Pd
Pt
Cu
Ag
Au
Zn
Cd
Hg

Metals

Al
Ga
In
Tl
Sn
Pb
Bi
Po

Semi-Metals

B
Si
Ge
As
Sb
Se
Te

Non-Metals

C
N
P
O
S

Halogens

F
Cl
Br
I
At

Noble Gases

He
Ne
Ar
Kr
Xe
Rn

Lanthanides

La
Ce
Pr
Nd
Pm
Sm
Eu
Gd
Tb
Dy
Ho
Er
Tm
Yb
Lu

Actinides

Ac
Th
U
Np
Pu
Am
Cm
Bk
Cf
Es
Fm
Md
No
Lr