Periodic Table of Chemical Elements

 Earn_Money earn money
simple way
e-shop - Student Loans - Science & Chemistry Forum - Dictionary - Measurements
G 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
P      
1
  1 1
H
1.00794
 
Metals Non metals Metalloids Unknown
Alkali metals Halogens Metalloids Unknown
Alkaline earth metals Other nonmetals    
Transition elements Noble gases    
Other metals      
Lanthanides Element state at (0 °C and 1 atm)
Actinides Solid Gas Liquid Synthetic
 
  2 2
He
4.002602
2
  3 2
1
Li
6.941
  4 2
2
Be
9.012182
  5 2
3
B
10.811
  6 2
4
C
12.0107
  7 2
5
N
14.0067
  8 2
6
O
15.9994
  9 2
7
F
18.998403
  10 2
8
Ne
20.1797
3
  11 2
8
1
Na
22.989769
  12 2
8
2
Mg
24.3050
  13 2
8
3
Al
26.981538
  14 2
8
4
Si
28.0855
  15 2
8
5
P
30.973762
  16 2
8
6
S
32.065
  17 2
8
7
Cl
35.453
  18 2
8
8
Ar
39.948
4
  19 2
8
8
1
K
39.0983
  20 2
8
8
2
Ca
40.078
  21 2
8
9
2
Sc
44.9559..
  22 2
8
10
2
Ti
47.867
  23 2
8
11
2
V
50.9415
  24 2
8
13
1
Cr
51.9961
  25 2
8
13
2
Mn
54.938045
  26 2
8
14
2
Fe
55.845
  27 2
8
15
2
Co
58.933195
  28 2
8
16
2
Ni
58.6934
  29 2
8
18
1
Cu
63.546
  30 2
8
18
2
Zn
65.38
  31 2
8
18
3
Ga
69.723
  32 2
8
18
4
Ge
72.64
  33 2
8
18
5
As
74.92160
  34 2
8
18
6
Se
78.96
  35 2
8
18
7
Br
79.904
  36 2
8
18
8
Kr
83.798
5
  37 2
8
18
8
1
Rb
85.4678
  38 2
8
18
8
2
Sr
87.62
  39 2
8
18
9
2
Y
88.90585
  40 2
8
18
10
2
Zr
91.224
  41 2
8
18
12
1
Nb
92.90638
  42 2
8
18
13
1
Mo
95.94
  43 2
8
18
13
2
Tc
(98)
  44 2
8
18
15
1
Ru
101.07
  45 2
8
18
16
1
Rh
102.90550
  46 2
8
18
18
Pd
106.42
  47 2
8
18
18
1
Ag
107.8682
  48 2
8
18
18
2
Cd
112.411
  49 2
8
18
18
3
In
114.818
  50 2
8
18
18
4
Sn
118.710
  51 2
8
18
18
5
Sb
121.760
  52 2
8
18
18
6
Te
127.60
  53 2
8
18
18
7
I
126.90447
  54 2
8
18
18
8
Xe
131.293
6
  55 2
8
18
18
8
1
Cs
132.9054
  56 2
8
18
18
8
2
Ba
137.327
*
  72 2
8
18
32
10
2
Hf
178.49
  73 2
8
18
32
11
2
Ta
180.94788
  74 2
8
18
32
12
2
W
183.84
  75 2
8
18
32
13
2
Re
186.207
  76 2
8
18
32
14
2
Os
190.23
  77 2
8
18
32
15
2
Ir
192.217
  78 2
8
18
32
17
1
Pt
195.084
  79 2
8
18
32
18
1
Au
196.96656
  80 2
8
18
32
18
2
Hg
200.59
  81 2
8
18
32
18
3
Tl
204.3833
  82 2
8
18
32
18
4
Pb
207.2
  83 2
8
18
32
18
5
Bi
208.98040
  84 2
8
18
32
18
6
Po
(209)
  85 2
8
18
32
18
7
At
(210)
  86 2
8
18
32
18
8
Rn
(222)
7
  87 2
8
18
32
18
8
1
Fr
(223)
  88 2
8
18
32
18
8
2
Ra
(226)
**
  104 2
8
18
32
32
10
2
Rf
(267)
  105 2
8
18
32
32
11
2
Db
(268)
  106 2
8
18
32
32
12
2
Sg
(271)
  107 2
8
18
32
32
13
2
Bh
(272)
  108 2
8
18
32
32 14 2
Hs
(270)
  109 2
8
18
32
32
15
2
Mt
(276)
  110 2
8
18
32
32
17
1
Ds
(281)
  111 2
8
18
32
32
17
2
Rg
(280)
  112 2
8
18
32
32
18
2
Uub
(285)
  113 2
8
18
32
32
18
3
Uut
(284)
  114 2
8
18
32
32
18
4
Uuq
(289)
  115 2
8
18
32
32
18
5
Uup
(288)
  116 2
8
18
32
32
18
6
Uuh
(293)
  117 2
8
18
32
32
18
7
Uus
.
  118 2
8
18
32
32
18
8
Uuo
(294)
G 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
                                     
  * Lanthanides
  57 2
8
18 18
9
2
La
138.9054
  58 2
8
18 19
9
2
Ce
140.116
  59 2
8
18 21 8
2
Pr
140.9076
  60 2
8
18
22
8
2
Nd
144.242
  61 2
8
18
23 8
2
Pm
(145)
  62 2
8
18 24
8
2
Sm
150.36
  63 2
8
18 25
8
2
Eu
151.964
  64 2
8
18 25
9
2
Gd
157.25
  65 2
8
18 27
8
2
Tb
158.9253
  66 2
8
18 28
8
2
Dy
162.500
  67 2
8
18 29
8
2
Ho
164.9303
  68 2
8
18 30
8
2
Er
167.259
  69 2
8
18 31 8
2
Tm
168.9342
  70 2
8
18 32 8
2
Yb
173.054
  71 2
8
18 32
9
2
Lu
174.9668
 
  ** Actinides
  89 2
8
18
32
18
9
2
Ac
(227)
  90 2
8
18
32
18
10
2
Th
232.03806
  91 2
8
18
32
20
9
2
Pa
231.03588
  92 2
8
18
32 21 9 2
U
238.0289
  93 2
8
18
32
22
9
2
Np
(237)
  94 2
8
18
32
24
8
2
Pu
(244)
  95 2
8
18
32
25
8
2
Am
(243)
  96 2
8
18
32
25 9 2
Cm
(247)
  97 2
8
18
32
27
8
2
Bk
(247)
  98 2
8
18
32
28
8
2
Cf
(251)
  99 2
8
18
32
29
8
2
Es
(252)
  100 2
8
18
32
30
8
2
Fm
(257)
  101 2
8
18
32
31
8
2
Md
(258)
  102 2
8
18
32
32
8
2
No
(259)
  103 2
8
18
32
32
8
3
Lr
(262)
 
Periodic Table of the Chemical Elements History

1669 German amateur alchemist Hennig Brand tried to turn metals into gold. He want to do a "Phisopher's stone". After lot of atempts of creating gold accidently he had found Phosphorus. It was first steps for discovering more Periodic Table elements as we have now.

1680 Phosphorus was also found by Irish natural philosopher, chemist, physicist, inventor, Robert Boyle. This time Phosphorus was presented to general public.

1809 Till this year there was discovered about 50 elements. Scietists began to see patterns in the characteristics of chemical elements. It was possible to start grouping.

1863 chemist John Newlands from England distributed all discovered 56 elements into 11 groups. Method of deviding elements was based on characteristics of elements.

1869 Dimitri Mendeleev chemist from Russia went ahead to ordering chemical elements. From then elements were arranged by atomic mass. He left spaces for new elements which were discovered later.

1886 physicist Antoine Bequerel from France discovered radioactivity. New Zealand student Ernest Rutherford named three types of radiation: alpha, beta and gamma rays. Pierre and Marie Curie began work on the radiation of Uranium and Thorium, and later discovered Radium and Polonium. They also found that that beta particles were negatively charged.

1894 Noble Gases were discovered by William Ramsay and Lord Rayleigh and placed as Group 0 in the Periodic Table.

1897 English physicist Joseph John Thomson was first who found electrons. Tiny negative particles in atom. Later John Townsend and Robert Millikan charactarised their exact columes of charge and mass.

1900 Henri Bequerel assumed that electrons and beta particles are the same thing.

1903 Ernest Rutherford announces that radioactivity is cause of the breakdown of atoms.

1911 Ernest Rutherford and physicist from Germany Hans Geiger find out that electrons are moving around the nucleus of an atom.

1913 Niels Bohr discovered that electrons goes only in certain successively larger orbits. He saw that the inner orbits could have less electrons then outer orbits.

1914 Ernest Rutherford identified protons in the atomic nucleus. Later he transmutated a Nitrogen atom into an Oxygen and was the first man who done it. Physicist Henry Moseley from England granted atomic numbers, based on the number of electrons in an atom.

1932 James Chadwick was first who discovered neutrons and isotopes. It was the complete basis for the Periodic Table view.

1945 Glenn Seaborg discovered lanthanides and actinides. These chemical elements are placed below the Periodic Table and are Group III elements.

Hennig Brand
Hennig Brand
Dmitri Mendeleev
Dmitri Mendeleev
Ernest Rutherford
Ernest Rutherford		 Joseph John Thomson
Joseph John Thomson		 Glenn Searborg
Glenn Seaborg
Copyright 2009. All rights reserved by Eternity Truths