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Explore key information about the chemical elements through this periodic tableGroup12 3456789101112131415161718Period11
H
1.008
2
He
4.0026
23
Li
6.94
4
Be
9.0122
5
B
10.81
6
C
12.011
7
N
14.007
8
O
15.999
9
F
18.998
10
Ne
20.180
311
Na
22.990
12
Mg
24.305
13
Al
26.982
14
Si
28.085
15
P
30.974
16
S
32.06
17
Cl
35.45
18
Ar
39.948
419
K
39.098
20
Ca
40.078
21
Sc
44.956
22
Ti
47.867
23
V
50.942
24
Cr
51.996
25
Mn
54.938
26
Fe
55.845
27
Co
58.933
28
Ni
58.693
29
Cu
63.546
30
Zn
65.38
31
Ga
69.723
32
Ge
72.63
33
As
74.922
34
Se
78.96
35
Br
79.904
36
Kr
83.798
537
Rb
85.468
38
Sr
87.62
39
Y
88.906
40
Zr
91.224
41
Nb
92.906
42
Mo
95.96
43
Tc
[97.91]
44
Ru
101.07
45
Rh
102.91
46
Pd
106.42
47
Ag
107.87
48
Cd
112.41
49
In
114.82
50
Sn
118.71
51
Sb
121.76
52
Te
127.60
53
I
126.90
54
Xe
131.29
655
Cs
132.91
56
Ba
137.33
*71
Lu
174.97
72
Hf
178.49
73
Ta
180.95
74
W
183.84
75
Re
186.21
76
Os
190.23
77
Ir
192.22
78
Pt
195.08
79
Au
196.97
80
Hg
200.59
81
Tl
204.38
82
Pb
207.2
83
Bi
208.98
84
Po
[208.98]
85
At
[209.99]
86
Rn
[222.02]
787
Fr
[223.02]
88
Ra
[226.03]
**103
Lr
[262.11]
104
Rf
[265.12]
105
Db
[268.13]
106
Sg
[271.13]
107
Bh
[270]
108
Hs
[277.15]
109
Mt
[276.15]
110
Ds
[281.16]
111
Rg
[280.16]
112
Cn
[285.17]
113
Uut
[284.18]
114
Fl
[289.19]
115
Uup
[288.19]
116
Lv
[293]
117
Uus
[294]
118
Uuo
[294]
*Lanthanoids*57
La
138.91
58
Ce
140.12
59
Pr
140.91
60
Nd
144.24
61
Pm
[144.91]
62
Sm
150.36
63
Eu
151.96
64
Gd
157.25
65
Tb
158.93
66
Dy
162.50
67
Ho
164.93
68
Er
167.26
69
Tm
168.93
70
Yb
173.05
**Actinoids**89
Ac
[227.03]
90
Th
232.04
91
Pa
231.04
92
U
238.03
93
Np
[237.05]
94
Pu
[244.06]
95
Am
[243.06]
96
Cm
[247.07]
97
Bk
[247.07]
98
Cf
[251.08]
99
Es
[252.08]
100
Fm
[257.10]
101
Md
[258.10]
102
No
[259.10]
The periodic table is a table of the chemical elements in which the elements are arranged by order of atomic number in such a way that the periodic properties (chemical periodicity) of the elements are made clear. The standard form of the table includes periods (usually horizontal in the periodic table) and groups (usually vertical). Elements in groups have some similar properties to each other. There is no one single or best structure for the periodic table but by whatever consensus there is, the form used here is very useful. The periodic table is a masterpiece of organised chemical information. The evolution of chemistry's periodic table into the current form is an astonishing achievement with major contributions from many famous chemists and other eminent scientists.
Latest newsOn August 12th experiments involving zinc ions travelling at 10% of the speed of light colliding with a thin bismuth layer apparently produced a very heavy ion followed by a chain of six consecutive alpha decays identified as products of an isotope of element 113 278>Uut - see new evidence for elements 113.
Confirmation of the discoveries of and name proposals for elements 114 (flerovium) and 116 (livermorium)A news reports from IUPAC (more about flerovium and livermorium) indicates the confirmation of the discoveries of elements 114 and 116:Discovery of the Elements with Atomic Number 114 and 116. Proposals by the discoverers for the names of the two elements have now announced as:
- element 114: Flerovium (Fl) after the physicist Georgiy Flerov. Georgiy N. Flerov (1913-1990) was a renowned physicist who discovered the spontaneous fission of uranium and was a pioneer in heavy-ion physics.
- element 116: Livermorium (Lv), after the Livermore laboratories. A group of researchers from the Laboratory, along with scientists at the Flerov Laboratory of Nuclear Reactions, participated in the work carried out in Dubna on the synthesis of superheavy elements, including element 116.
You can buy these periodic table posters online and others at our WebElements periodic table shop.
Element 117 discovered?A paper just published (5 April 2010) in Physical Review Letters by Yu. Ts. Oganessian and others claims the synthesis of a new element with atomic number 117. The abstract states "The discovery of a new chemical element with atomic number Z=117 is reported. The isotopes 293117 and 294117 were produced in fusion reactions between 48Ca and 249Bk. Decay chains involving eleven new nuclei were identified by means of the Dubna Gas Filled Recoil Separator. The measured decay properties show a strong rise of stability for heavier isotopes with Z>=111, validating the concept of the long sought island of enhanced stability for super-heavy nuclei." Read more:
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