The Periodic Table by WebElements

The periodic table is an arrangment of the chemical elements ordered by atomic number so that periodic properties of the elements (chemical periodicity) are made clear.WebElements welcomes four new elements to the periodic table: element 113, nihonium (Nh); element 115, moscovium, Mc; element 117, tennessine, Ts; and 118, oganesson, Og. These are now accepted as discovered and officially part of the periodic table. Their provisional names were announced 8 June 2016 from which there is a five-month consultation period after which the new names are lilely to become official.


Explore geological information about the chemical elements through this periodic table
Group 1 2   3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Period
1
1
2
2
3
4
5
6
7
8
9
10
3
11
12
13
14
15
16
17
18
4
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
5
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
6
55
56
*
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
7
87
88
**
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
 
*Lanthanoids *
57
58
59
60
61
62
63
64
65
66
67
68
69
70
**Actinoids **
89
90
91
92
93
94
95
96
97
98
99
100
101
102


The standard form of the periodic table includes periods (shown horizontally) and groups (shown vertically). 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 in WebElements 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 now famous chemists and other eminent scientists.

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Element 117 discovered

On 1 May 2014 a paper published in Phys. Rev. Lett by J. Khuyagbaatar and others states the superheavy element with atomic number Z = 117 (ununseptium) was produced as an evaporation residue in the 48Ca and 249Bk fusion reaction at the gas-filled recoil separator TASCA at GSI Darmstadt, Germany. The radioactive decay of evaporation residues and their α-decay products was studied using a detection setup that allows measurement of decays of single atomic nuclei with very short half-lives . Two decay chains comprising seven α-decays and a spontaneous fission each were identified and assigned to the isotope 294Uus (element 117) and its decay products.


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Copyright 1993-2016 Mark Winter [The University of Sheffield and WebElements Ltd, UK]. All rights reserved.