Chemistry Learner

It's all about Chemistry

Home / The Periodic Table

The Periodic Table

What is the Periodic Table

A table where all the elements in existence are arranged together in rows, in order of their atomic numbers is called the periodic table. Similar atomic numbers mean that the elements have similar atomic structure, thus similar chemical properties. The rows are known as periods and the columns are known as groups.

Usually, each row, or period, has the metal elements on the left, while the non-metals are on the right. Six of the groups are numbered, with the elements having their own group names as well, for example, the halogens are in group 17, and noble gases in group 18.

The periodic table was first developed and published by Russian chemist Dmitri Mendeleev, in 1869. It has since been extended with the discovery of new metals, with table remaining extremely useful in the field of chemistry as well as other scientific fields.

 The Periodic Table of Elements

 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

1
1H

Hydro-
gen

2He

Helium

2 3Li

Lithium

4Be

Bery-
llium

5B

Boron

6C

Carbon

7N

Nitro-
gen

8O

Oxygen

9F

Fluo-
rine

10Ne

Neon

3 11Na

Sodium

12Mg

Magne-
sium

13Al

Alumi-
num

14Si

Silicon

15P

Phos-
phorus

16S

Sulfur

17Cl

Chlo-
ride

18Ar

Argon

4 19K

Potas-
sium

20Ca

Calcium

21Sc

Scan-
dium

22Ti

Tita-
nium

23V

Vana-
dium

24Cr

Chro-
mium

25Mn

Manga-
nese

26Fe

Iron

27Co

Cobalt

28Ni

Nickel

29Cu

Copper

30Zn

Zinc

31Ga

Gallium

32Ge

Germa-
nium

33As

Arsenic

34Se

Sele-
nium

35Br

Bro-
mine

36Kr

Krypton

5 37Rb

Rubi-
dium

38Sr

Stron-
tium

39Y

Yttrium

40Zr

Zirco-
nium

41Nb

Nio-
bium

42Mo

Molyb-
denum

43Tc

Techne-
tium

44Ru

Ruthe-
nium

45Rh

Rho-
dium

46Pd

Palla-
dium

47Ag

Silver

48Cd

Cad-
mium

49In

Indium

50Sn

Tin

51Sb

Anti-
mony

52Te

Tellu-
rium

53I

Iodine

54Xe

Xenon

6 55Cs

Cesium

56Ba

Barium

*
72Hf

Haf-
nium

73Ta

Tanta-
lum

74W

Tung-
sten

75Re

Rhe-
nium

76Os

Os-
mium

77Ir

Iri-
dium

78Pt

Plati-
num

79Au

Gold

80Hg

Mercury

81Tl

Thal-
lium

82Pb

Lead

83Bi

Bismuth

84Po

Polo-
nium

85At

Astatine

86Rn

Radon

7 87Fr

Fran-
cium

88Ra

Radium

**
104Rf

Ruther-
fordium

105Db

Dub-
nium

106Sg

Seabor-
gium

107Bh

Boh-
rium

108Hs

Hass-
ium

109Mt

Meitne-
rium

110Ds

Darmst-
adtium

111Rg

Roent-
genium

112Cn

Coperni-
cium

113Nh

Niho-
nium

114Fl

Flero-
vium

115Mc

Mosco-
vium

116Lv

Liver-
morium

117Ts

Tennes-
sine

118Og

Ogan-
esson

 
Lanthanide Series* 57La

Lant-
hanum

58Ce

Cerium

59Pr

Praseo-
dymium

60Nd

Neody-
mium

61Pm

Prome-
thium

62Sm

Sama-
rium

63Eu

Euro-
pium

64Gd

Gadoli-
nium

65Tb

Terbium

66Dy

Dyspro-
sium

67Ho

Hol-
mium

68Er

Erbium

69Tm

Thulium

70Yb

Ytter-
bium

71Lu

Lute-
tium

Actinide Series** 89Ac

Acti-
nium

90Th

Thorium

91Pa

Protac-
tinium

92U

Ura-
nium

93Np

Neptu-
nium

94Pu

Pluto-
nium

95Am

Ameri-
cium

96Cm

Curium

97Bk

Berke-
lium

98Cf

Califor-
nium

99Es

Einste-
inium

100Fm

Fermium

101Md

Mende-
levium

102No

Nobe-
lium

103Lr

Lawren-
cium

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

1
1H

Hydro-
gen

2He

Helium

2 3Li

Lithium

4Be

Bery-
llium

5B

Boron

6C

Carbon

7N

Nitro-
gen

8O

Oxygen

9F

Fluo-
rine

10Ne

Neon

3 11Na

Sodium

12Mg

Magne-
sium

13Al

Alumi-
num

14Si

Silicon

15P

Phos-
phorus

16S

Sulfur

17Cl

Chlo-
ride

18Ar

Argon

4 19K

Potas-
sium

20Ca

Calcium

21Sc

Scan-
dium

22Ti

Tita-
nium

23V

Vana-
dium

24Cr

Chro-
mium

25Mn

Manga-
nese

26Fe

Iron

27Co

Cobalt

28Ni

Nickel

29Cu

Copper

30Zn

Zinc

31Ga

Gallium

32Ge

Germa-
nium

33As

Arsenic

34Se

Sele-
nium

35Br

Bro-
mine

36Kr

Krypton

5 37Rb

Rubi-
dium

38Sr

Stron-
tium

39Y

Yttrium

40Zr

Zirco-
nium

41Nb

Nio-
bium

42Mo

Molyb-
denum

43Tc

Techne-
tium

44Ru

Ruthe-
nium

45Rh

Rho-
dium

46Pd

Palla-
dium

47Ag

Silver

48Cd

Cad-
mium

49In

Indium

50Sn

Tin

51Sb

Anti-
mony

52Te

Tellu-
rium

53I

Iodine

54Xe

Xenon

6 55Cs

Cesium

56Ba

Barium

*
72Hf

Haf-
nium

73Ta

Tanta-
lum

74W

Tung-
sten

75Re

Rhe-
nium

76Os

Os-
mium

77Ir

Iri-
dium

78Pt

Plati-
num

79Au

Gold

80Hg

Mercury

81Tl

Thal-
lium

82Pb

Lead

83Bi

Bismuth

84Po

Polo-
nium

85At

Astatine

86Rn

Radon

7 87Fr

Fran-
cium

88Ra

Radium

**
104Rf

Ruther-
fordium

105Db

Dub-
nium

106Sg

Seabor-
gium

107Bh

Boh-
rium

108Hs

Hass-
ium

109Mt

Meitne-
rium

110Ds

Darmst-
adtium

111Rg

Roent-
genium

112Cn

Coperni-
cium

113Nh

Niho-
nium

114Fl

Flero-
vium

115Mc

Mosco-
vium

116Lv

Liver-
morium

117Ts

Tennes-
sine

118Og

Ogan-
esson

   
Lanthanide Series* 57La

Lant-
hanum

58Ce

Cerium

59Pr

Praseo-
dymium

60Nd

Neody-
mium

61Pm

Prome-
thium

62Sm

Sama-
rium

63Eu

Euro-
pium

64Gd

Gadoli-
nium

65Tb

Terbium

66Dy

Dyspro-
sium

67Ho

Hol-
mium

68Er

Erbium

69Tm

Thulium

70Yb

Ytter-
bium

71Lu

Lute-
tium

Actinide Series** 89Ac

Acti-
nium

90Th

Thorium

91Pa

Protac-
tinium

92U

Ura-
nium

93Np

Neptu-
nium

94Pu

Pluto-
nium

95Am

Ameri-
cium

96Cm

Curium

97Bk

Berke-
lium

98Cf

Califor-
nium

99Es

Einste-
inium

100Fm

Fermium

101Md

Mende-
levium

102No

Nobe-
lium

103Lr

Lawren-
cium

 The Lanthanide and Actinide Series

The lanthanides (atomic numbers 57 to 71) and actinides (atomic numbers 89 to 103) come in separate rows in the periodic table. The reason behind this can be stated simply as keeping them in the main table would make the periodic table too wide. You can see in following picture how the table would have looked with the lanthanides and actinides:

Periodic Table Lanthanides and Actinides

Now, this structure would make it difficult to handle the whole periodic table, especially on print, making in intelligible. So, keeping them in separate rows below solves the problem.

Comments are closed.