[MSL]

Chemical elements and antielements

The antielements are not yet produced on Earth (except a few) and here I'll mention just the possibilities

Well, you know probably that there were produced some chemical antielements -- antihydrogen, antihelium. Here I want to make a list of the elements and the (real or possible) antielements (like gold - antigold. By the way there is another meaning of 'antigold' -- "(finance, historical) Opposing the use of gold as a medium of exchange."^{https://en.wiktionary.org/wiki/antigold https://creativecommons.org/licenses/by-sa/3.0/}):

The list

1    H    Hydrogen    Antihydrogen
2    He    Helium   Antihelium
3    Li    Lithium Antilithium
4    Be    Beryllium Antiberyllium
5    B    Boron Antiboron
6    C    Carbon    Anticarbon
7    N    Nitrogen    Antinitrogen
8    O    Oxygen Antioxygen
9    F    Fluorine Antifluorine
10    Ne    Neon Antineon
11    Na    Sodium Antisodium
12    Mg    Magnesium Antimagnesium
13    Al    Aluminium    Antialuminium
14    Si    Silicon Antisilicon
15    P    Phosphorus Antiphosphorus
16    S    Sulfur Antisulfur
17    Cl    Chlorine Antichlorine
18    Ar    Argon Antiargon
19    K    Potassium Antipotassium
20    Ca    Calcium    Anticalcium
21    Sc    Scandium    Antiscandium
22    Ti    Titanium Antititanium
23    V    Vanadium Antivanadium
24    Cr    Chromium Antichromium
25    Mn    Manganese Antimanganese
26    Fe    Iron Antiiron
27    Co    Cobalt Anticobalt
28    Ni    Nickel Antinickel
29    Cu    Copper Anticopper
30    Zn    Zinc Antizinc
31    Ga    Gallium Antigallium
32    Ge    Germanium Antigermanium
33    As    Arsenic Antiarsenic
34    Se    Selenium Antiselenium
35    Br    Bromine Antibromine
36    Kr    Krypton Antikrypton
37    Rb    Rubidium Antirubidium
38    Sr    Strontium Antistrontium
39    Y    Yttrium    Antiyttrium
40    Zr    Zirconium Antizirconium
41    Nb    Niobium Antiniobium
42    Mo    Molybdenum Antimolybdenum
43    Tc    Technetium Antitechnetium
44    Ru    Ruthenium    Antiruthenium
45    Rh    Rhodium    Antirhodium
46    Pd    Palladium Antipalladium
47    Ag    Silver Antisilver
48    Cd    Cadmium Anticadmium
49    In    Indium Antiindium
50    Sn    Tin    Antitin
51    Sb    Antimony    Antiantimony
52    Te    Tellurium Antitellurium
53    I    Iodine Antiiodine
54    Xe    Xenon Antixenon
55    Cs    Caesium Anticaesium
56    Ba    Barium Antibarium
57    La    Lanthanum Antilanthanum
58    Ce    Cerium Anticerium
59    Pr    Praseodymium Antipraseodymium
60    Nd    Neodymium Antineodymium
61    Pm    Promethium Antipromethium
62    Sm    Samarium Antisamarium
63    Eu    Europium Antieuropium
64    Gd    Gadolinium Antigadolinium
65    Tb    Terbium Antiterbium
66    Dy    Dysprosium Antidysprosium
67    Ho    Holmium Antiholmium
68    Er    Erbium    Antierbium
69    Tm    Thulium Antithulium
70    Yb    Ytterbium    Antiytterbium
71    Lu    Lutetium Antilutetium
72    Hf    Hafnium    Antihafnium
73    Ta    Tantalum Antitantalum
74    W    Tungsten Antitungsten
75    Re    Rhenium    Antirhenium
76    Os    Osmium Antiosmium
77    Ir    Iridium    Antiiridium
78    Pt    Platinum    Antiplatinum
79    Au    Gold    Antigold
80    Hg    Mercury Antimercury
81    Tl    Thallium Antithallium
82    Pb    Lead    Antilead
83    Bi    Bismuth    Antibismuth
84    Po    Polonium    Antipolonium
85    At    Astatine Antiastatine
86    Rn    Radon Antiradon
87    Fr    Francium    Antifrancium
88    Ra    Radium    Antiradium
89    Ac    Actinium Antiactinium
90    Th    Thorium Antithorium
91    Pa    Protactinium Antiprotactinium
92    U    Uranium Antiuranium
93    Np    Neptunium Antineptunium
94    Pu    Plutonium    Antiplutonium
95    Am    Americium Antiamericium
96    Cm    Curium Anticurium
97    Bk    Berkelium    Antiberkelium
98    Cf    Californium Anticalifornium
99    Es    Einsteinium Antieinsteinium
100    Fm    Fermium Antifermium
101    Md    Mendelevium Antimendelevium
102    No    Nobelium Antinobelium
103    Lr    Lawrencium Antilawrencium
104    Rf    Rutherfordium Antirutherfordium
105    Db    Dubnium Antidubnium
106    Sg    Seaborgium Antiseaborgium
107    Bh    Bohrium Antibohrium
108    Hs    Hassium Antihassium
109    Mt    Meitnerium Antimeitnerium
110    Ds    Darmstadtium Antidarmstadtium
111    Rg    Roentgenium Antiroentgenium
112    Cn    Copernicium Anticopernicum
113    Uut    Ununtrium    Antiununtrium
114    Fl    Flerovium Antiflerovium
115    Uup    Ununpentium Antiununpentium
116    Lv    Livermorium Antilivermorium
117    Uus    Ununseptium Antiununseptium
118    Uuo    Ununoctium Antiununoctium
  (The unnamed elements 113, 115, 117, and 118 have recently been confirmed, and the following names have been proposed by their discoverers. We show them here with their 'anti-' names):                                    
113    Nh    Nihonium Antinihonium
115    Mc    Moscovium    Antimoscovium
117    Ts    Tennessine Antitennessine
118    Og    Oganesson Antioganesson

- - -

Source of the list of chemical elements: https://en.wikipedia.org/wiki/List_of_chemical_elements.

[Gay]

Hydrogen

Hydrogen. A chemical element with chemical symbol H and atomic number 1.^{https://en.wikipedia.org/wiki/Hydrogen}

[Gay]

Helium

Helium. A chemical element with symbol He and atomic number 2.^{https://en.wikipedia.org/wiki/Helium}

[MSL]

Lithium

Lithium. A chemical element with the symbol Li and atomic number 3.^{https://en.wikipedia.org/wiki/Lithium}

[Gay]

Beryllium

Beryllium. A chemical element with symbol Be and atomic number 4.^{https://en.wikipedia.org/wiki/Beryllium}

[Alexa]

Boron

Boron. A metalloid chemical element with symbol B and atomic number 5.^{https://en.wikipedia.org/wiki/Boron}

[MSL]

Carbon

 Carbon. A chemical element with symbol C and atomic number 6.^{https://en.wikipedia.org/wiki/Carbon}

[Alexa]

Nitrogen

Nitrogen. A chemical element with symbol N and atomic number 7.

[MSL]

Oxygen

 Oxygen. A chemical element with symbol O and atomic number 8.^{https://en.wikipedia.org/wiki/Oxygen}

[Alexa]

Fluorine

Fluorine. A chemical element with symbol F and atomic number 9.^{https://en.wikipedia.org/wiki/Fluorine}

[MSL]

Neon

Neon. A chemical element with symbol Ne and atomic number 10.^{https://en.wikipedia.org/wiki/Neon}

[Alexa]

Sodium

Sodium. A chemical element with symbol Na and atomic number 11.^{https://en.wikipedia.org/wiki/Sodium}

[MSL]

Magnesium

 Magnesium. A chemical element with symbol Mg and atomic number 12.^{https://en.wikipedia.org/wiki/Magnesium}

[Non-SEO]

Aluminium

Aluminium (or aluminum; if 'aluminum', then the antielement is 'antialuminum'). A chemical element in the boron group with symbol Al and atomic number 13.^{https://en.wikipedia.org/wiki/Aluminium}

[MSL]

Silicon

 Silicon. A chemical element with symbol Si and atomic number 14.^{https://en.wikipedia.org/wiki/Silicon}