Extended periodic table

From Simple English Wikipedia, the free encyclopedia

Scientists are trying to make new chemical elements that do not exist yet. In this way, they will extend (make longer) the periodic table. As of 2022, the element with the highest atomic number is oganesson, element 118. Scientists have tried to make atoms with higher atomic numbers, by smashing smaller atoms together. Scientists have also made predictions about how to make these atoms. There is probably a biggest possible atomic number for any atom. Atoms with a higher atomic number than this cannot exist. However, scientists are not sure what this number is.

Layout[change | change source]

The extended periodic table is a version of the periodic table that is longer than the normal one. The inner transition metals are placed between Group 2 and Group 3 on the periodic table. On a normal periodic table the inner transition metals are below Groups 2 and 3.

Extended Periodic Table
(Superheavy elements may not follow the order of this table)
1 1
H
2
He
2 3
Li
4
Be
5
B
6
C
7
N
8
O
9
F
10
Ne
5 11
Na
12
Mg
13
Al
14
Si
15
P
16
S
17
Cl
18
Ar
4 19
K
20
Ca
21
Sc
22
Ti
23
V
24
Cr
25
Mn
26
Fe
27
Co
28
Ni
29
Cu
30
Zn
31
Ga
32
Ge
33
As
34
Se
35
Br
36
Kr
5 37
Rb
38
Sr
39
Y
40
Zr
41
Nb
42
Mo
43
Tc
44
Ru
45
Rh
46
Pd
47
Ag
48
Cd
49
In
50
Sn
51
Sb
52
Te
53
I
54
Xe
6 55
Cs
56
Ba
57
La
58
Ce
59
Pr
60
Nd
61
Pm
62
Sm
63
Eu
64
Gd
65
Tb
66
Dy
67
Ho
68
Er
69
Tm
70
Yb
71
Lu
72
Hf
73
Ta
74
W
75
Re
76
Os
77
Ir
78
Pt
79
Au
80
Hg
81
Tl
82
Pb
83
Bi
84
Po
85
At
86
Rn
7 87
Fr
88
Ra
89
Ac
90
Th
91
Pa
92
U
93
Np
94
Pu
95
Am
96
Cm
97
Bk
98
Cf
99
Es
100
Fm
101
Md
102
No
103
Lr
104
Rf
105
Db
106
Sg
107
Bh
108
Hs
109
Mt
110
Ds
111
Rg
112
Cn
113
Nh
114
Fl
115
Mc
116
Lv
117
Ts
118
Og
8 119
Uue
120
Ubn
121
Ubu
122
Ubb
123


Ubt

124
Ubq
125
Ubp
126
Ubh
127
Ubs
128
Ubo
129
Ube
130
Utn
131
Utu
132
Utb
133
Utt
134
Utq
135
Utp
136
Uth
137
Uts
138
Uto
139
Ute
140
Uqn
141
Uqu
142
Uqb
143
Uqt
144
Uqq
145
Uqp
146
Uqh
147
Uqs
148
Uqo
149
Uqe
150
Upn
151
Upu
152
Upb
153
Upt
154
Upq
155
Upp
156
Uph
157
Ups
158
Upo
159
Upe
160
Uhn
161
Uhu
162
Uhb
163
Uht
164
Uhq
165
Uhp
166
Uhh
167
Uhs
168
Uho
169
Uhe
170
Usn
171
Usu
172
Usb
9 173
Ust
174
Usq

Naming of elements[change | change source]

Each of these predicted elements can be given a name. These names are based on the digits of the atomic number. They were set by IUPAC, and come from Latin and Greek.

  • 0: nil (n)
  • 1: un (u)
  • 2: bi (b)
  • 3: tri (t)
  • 4: quad (q)
  • 5: pent (p)
  • 6: hex (h)
  • 7: sept (s)
  • 8: oct (o)
  • 9: enn/en (e)

The chemical name and symbol come from these put together, followed by "ium" or "um". For example, element 138 is called untrioctium and has symbol Uto.

An element can also be named by "eka-" followed by the element above it in the periodic table. For example, ununennium can also be called eka-francium.

Predictions[change | change source]

Pekka Pykkö has predicted how atomic orbitals will fill up as atomic number increases. According to this model, element 172 should be the end of the row that starts with element 119.[1]

Related pages[change | change source]

References[change | change source]

  1. Pyykkö, Pekka (2011). "A suggested periodic table up to Z ≤ 172, based on Dirac–Fock calculations on atoms and ions". Phys. Chem. Chem. Phys. 13 (1): 161–168. doi:10.1039/C0CP01575J. ISSN 1463-9076.

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