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The following is the extended periodic table containing 256 elements (for comparison the standard periodic table contains 118 elements). Only 118 elements have been observed and officially named. Elements with atomic numbers 119 to 256 are not [officially] named until they are discovered, but right now they use placeholder names. On this page though, the periodic table displays provisional names for these undiscovered elements, all after prominent scientists (especially chemists and physicists). It is updated as of 11 March 2017.

The periodic table below contains five blocks, 82 families and 31 series. The only g-block series is shown below the main table. However the last possible element with atomic number 173, ultimium (Ul), which would be only element of the second g-block series below lavoisium, is not shown on the periodic table for a convenience reason.

Legend
s-block p-block d-block f-block g-block h-block
s1 s2
1s 1
H
Hydrogen
2
He
Helium
p1 p2 p3 p4 p5 p6
2s 3
Li
Lithium
4
Be
Beryllium
2p 5
B
Boron
6
C
Carbon
7
N
Nitrogen
8
O
Oxygen
9
F
Fluorine
10
Ne
Neon
3s 11
Na
Sodium
12
Mg
Magnesium
d1 d2 d3 d4 d5 d6 d7 d8 d9 d10 3p 13
Al
Aluminum
14
Si
Silicon
15
P
Phosphorus
16
S
Sulfur
17
Cl
Chlorine
18
Ar
Argon
4s 19
K
Potassium
20
Ca
Calcium
3d 21
Sc
Scandium
22
Ti
Titanium
23
V
Vanadium
24
Cr
Chromium
25
Mn
Manganese
26
Fe
Iron
27
Co
Cobalt
28
Ni
Nickel
29
Cu
Copper
30
Zn
Zinc
4p 31
Ga
Gallium
32
Ge
Germanium
33
As
Arsenic
34
Se
Selenium
35
Br
Bromine
36
Kr
Krypton
5s 37
Rb
Rubidium
38
Sr
Strontium
f1 f2 f3 f4 f5 f6 f7 f8 f9 f10 f11 f12 f13 f14 4d 39
Y
Yttrium
40
Zr
Zirconium
41
Nb
Niobium
42
Mo
Molybdenum
43
Tc
Technetium
44
Ru
Ruthenium
45
Rh
Rhodium
46
Pd
Palladium
47
Ag
Silver
48
Cd
Cadmium
5p 49
In
Indium
50
Sn
Tin
51
Sb
Antimony
52
Te
Tellurium
53
I
Iodine
54
Xe
Xenon
6s 55
Cs
Cesium
56
Ba
Barium
4f 57
La
Lanthanum
58
Ce
Cerium
59
Pr
Praseodymium
60
Nd
Neodymium
61
Pm
Promethium
62
Sm
Samarium
63
Eu
Europium
64
Gd
Gadolinium
65
Tb
Terbium
66
Dy
Dysprosium
67
Ho
Holmium
68
Er
Erbium
69
Tm
Thulium
70
Yb
Ytterbium
5d 71
Lu
Lutetium
72
Hf
Hafnium
73
Ta
Tantalum
74
W
Tungsten
75
Re
Rhenium
76
Os
Osmium
77
Ir
Iridium
78
Pt
Platinum
79
Au
Gold
80
Hg
Mercury
6p 81
Tl
Thallium
82
Pb
Lead
83
Bi
Bismuth
84
Po
Polonium
85
At
Astatine
86
Rn
Radon
7s 87
Fr
Francium
88
Ra
Radium
5f 89
Ac
Actinium
90
Th
Thorium
91
Pa
Protactinium
92
U
Uranium
93
Np
Neptunium
94
Pu
Plutonium
95
Am
Americium
96
Cm
Curium
97
Bk
Berkelium
98
Cf
Californium
99
Es
Einsteinium
100
Fm
Fermium
101
Md
Mendelevium
102
No
Nobelium
6d 103
Lr
Lawrencium
104
Rf
Rutherfordium
105
Db
Dubnium
106
Sg
Seaborgium
107
Bh
Bohrium
108
Hs
Hassium
109
Mt
Meitnerium
110
Ds
Darmstadtium
111
Rg
Roentgenium
112
Cn
Copernicium
7p 113
Nh
Nihonium
114
Fl
Flerovium
115
Mc
Moscovium
116
Lv
Livermorium
117
Ts
Tennessine
118
Og
Oganesson
8s 119
Nw
Newtonium
120
G
Galileum
* 6f 143
Du
Dumasium
144
Sh
Scheelium
145
Hb
Heisenbergium
146
Da
Davyum
147
Bo
Boltzmannium
148
Fa
Faradium
149
Av
Avogadrium
150
So
Schrodium
151
Hz
Hertzium
152
Wt
Wittenium
153
Dr
Diracium
154
Lw
Lewisium
155
Vh
Vanthoffium
156
Hk
Hawkinium
7d 157
Ke
Kelvinum
158
Ap
Amperium
159
Vw
Vanderwaalsium
160
Hu
Hundium
161
Fh
Fraunhoferium
162
Ma
Madelungium
163
Kp
Keplerium
164
Gb
Gibbsium
165
Bq
Becquerelium
166
Hi
Higgsium
8p 167
Kf
Kirchoffium
168
Bn
Bornium
169
J
Joulium
170
Hm
Helmholtzium
171
Bs
Bunsenine
172
Rs
Ramson
9s 173
Ul
Ultimium
174
Gr
Gregorium
** 7f 203
Nm
Nomonium
204
Abr
Abrahamium
205
Ea
Earthium
206
Sp
Sceptrium
207
Wg
Washingtonium
208
Sl
Slovakium
209
Jo
Johnsonium
210
Bl
Belarium
211
En
Ethnothorium
212
Ci
Cordelium
213
Ht
Hunterium
214
Bp
Bibloprotactinium
215
Ud
Urdium
216
It
Italium
8d 217
Yh
Yuhanium
218
Jp
Jupiturium
219
Ha
Haumium
220
Vi
Vicinium
221
Gc
Greecium
222
L
Latinum
223
Ko
Korium
224
Ja
Jasonium
225
Ph
Phillipium
226
Gv
Gustavum
9p 227
Dc
Dominicium
228
Bm
Burenium
229
Jf
Jeffersonium
230
Km
Kummerium
231
Aus
Austrine
232
St
Stevon
10s 233
Of
Offenbachium
234
Lb
Tors
g1 g2 g3 g4 g5 g6 g7 g8 g9 g10 g11 g12 g13 g14 g15 g16 g17 g18 g19 g20 g21 g22 g23 g24 g25 g26 g27 g28
* 5g 121
Ls
Lavoisium
122
Dm
Democritium
123
Ms
Moselium
124
T
Teslium
125
Dt
Daltonium
126
Mw
Maxwellium
127
Pk
Planckium
128
By
Boylium
129
Bz
Berzelium
130
Fn
Franklinium
131
Dw
Darwinium
132
To
Thomsonium
133
Pl
Paulium
134
Ah
Arrhenium
135
My
Meyerium
136
Cv
Cavendishium
137
Fy
Feynmanium
138
Cw
Chadwickium
139
A
Astonium
140
Ed
Edisonium
141
Ab
Abeggium
142
Bu
Butlerovium
** 6g 175
Mr
Martinium
176
An
Armstronium
177
Hy
Huygenium
178
Ck
Chandrasekharium
179
Do
Domenicocassinium
180
Iw
Ibnmusaalkhwarizmium
181
Eg
Eddingtonium
182
Af
Alrahmanalsufium
183
Bhz
Boherzium
184
Mm
Makemakium
185
Ch
Charonium
186
Qt
Qatarium
187
Bhr
Bahrainium
188
Cy
Caylum
189
Lg
Lagrangum
190
Jk
Janskyum
191
Hl
Hubblium
192
Bw
Brownium
193
Rm
Riemannium
194
Gk
Grothendieckium
195
Ll
Laplacium
196
Pi
Polarium
197
Sk
Sankovomedvezium
198
Ix
Ibexium
199
El
Elarium
200
Sv
Salvadorium
201
Me
Messierium
202
Jz
Jafaralkhazinium
h1 h2 h3 h4 h5 h6 h7 h8 h9 h10 h11 h12 h13 h14 h15 h16 h17 h18 h19 h20 h21 h22
 ! 6h 235
Lm
Lomonosovium
236
Tyv
Tyutchevium
237
Ps
Pushkinium
238
Vx
Vortexium
239
Ng
Novogireevium
240
Mod
Modularium
241
Va
Vaticanium
242
Ae
Argentinium
243
Chn
Chinium
244
Kg
Kyrgyzstanium
245
Nz
Newzelandium
246
Ia
Iranium
247
Iq
Iraqium
248
Uk
Ukrainium
249
Lo
Lermontovium
250
Ki
Kievium
251
Wc
Waterclosetium
252
Put
Putinium
253
Spb
Saintpetersburgium
254
Vs
Venusium
255
Prl
Proletarium
256
Su
Suvorovium
Elements
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
1 H He
2 Li Be B C N O F Ne
3 Na Mg Al Si P S Cl Ar
4 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
5 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
6 Cs Ba La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
7 Fr Ra Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
8 Nw G Ls Dm Ms T Dt Mw Pk By Bz Fn Dw To Pl Ah My Cv Fy Cw A Ed Ab Bu Du Sh Hb Da Bo Fa Av So Hz Wt Dr Lw Vh Hk Ke Ap Vw Hu Fh Ma Kp Gb Bq Hi Kf Bn J Hm Bs Rs
9 Ul Gr Mr An Hy Ck Do Iz Eg Af Bhz Mm Ch Qt Bhr Cy Lg Jk Hl Bw Rm Gk Ll Pi Sk Ie El Sv Me Jz Nm Abr Ea Sp Wg Sl Jo Bl En Ci Ht Bp Ud It Yh Jp Ha Vi Gc L Ko Ja Pp Gv Dc Bm Jf Km Aus St
10 Of Lb Lm Tyv Ps Vx Ng Mdl Va Ae Chn Kg Nz Ia Iq Ua Lo Ki Wc Put Spb Vs Prl Su Ic Zh Sd Le Cp Ml Tv Fj Wl Sa Kb Mh Tk Nr Hd Cld Is M Sun Mrs Aw Ks Jm Di Chy Ln Str Yt Zs Pv Mz Ve Sth Stl Kz Pas Mas Wb Asp Bt E Ct Tn Eh The Pe Zp Spr Ad Cc Io Lh Yn On Mtv Ob Tu Vyz Ol Vv Chk Arm Ff Tw Ka Nl Il Ur Kh Sdg Q Nv Mts Lf Mp Zg Iv X Mj Iy Ov Tq
11 Oa Oe Ai Dk Hn Lc Aut Et Tg Cok Mv Lx Uk Fp Gp Mq Sol Gm Pal Pc Jd Sud Vt Tr Id Em Mu Sey May Cor Mur Ber Td Gn Svc Agl Ey Fk Sog Asc Tt Bd Tks Bvg Uvg Nk Atf Chd Tkc Stp Cym Ly Rt Mi Ckr Sgl Tog Bin Nc Mov Sie Ny Nu Ao Psy Grs De Zw Cel Ft Nn Aj Bv Fi Afg Thl Cub Lib Od Hr Ep Pn Xr Ty Dn Oy Oc Tri Apl Hx Za Ot Uz Ais Om Bf Tz Gu Lk Bb Bvh Ws Lz Kw Mx Cg
12 Nik Nie Wk We Ug Sz Sw Cb Ig Mb Gy Wrg Dv Cool Gkz Gi Dj Vz Sy Ei Ro Peu Pan Nep Cmr Aa Tun Ay Cnd Gl Kd Bzl Kv Hp Dx Gs Agz Bc Bcm Gf Im Lt Mri Spi Col Pep Go Ow Dl Phl Sgp Trb Uy Clk Ik Tf Gt Ix Ph Qo Ak Nj Myl Ctc Mcg Dlw Ncl Scl Oh Wv Fd Wo Ns Mit Msu Az Nvd Aks Nx Ut Als Alb Clr Hw Tx Gg Ih Mon Iw Wy Or Ii Ndk Sdk Nsk Iu Vo Kn Ok Lus Kc Nyk Min Ntm Aub Gya Hit Lth Pg Slv Ew Cri Ib Dcr Wq Z Ql Ky Js Py Ue Wd Go Kl Ou Mf Op Uc Ip Ec Mis Alh Oo Dta Px Mim Vr Ub Puc Sx Nrd Dd Oi Jt Rl Mbu Gsp Dsp Glt Ei Clp Eo Ku Pq Yi Ld
13 Iso Psi Ery Eri Auo Tyo Euh Oth Ain Cap Ade Teb Beh Fb Mdf Aeg Tqq Skl Tyr Bg Ri Prt Sq Ax Jx Hyo Gep Ij Trv Dh Jn Cen Ces Btl Mth Ek Ldm Cls Tel Nid Bed Ved Ss Nrv Nso Hat Log Cyl Thy
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