Ag Silver Antigua and Barbuda
Al Aluminum Albania
Am Americium Armenia
Ar Argon Argentina
As Arsenic American Samoa
At Astatine Austria
Au Gold Australia
Ba Barium Bosnia and Herzegovina
Be Beryllium Belgium
Bh Bohrium Bahrain
Bi Bismuth Burundi
Br Bromine Brazil
Ca Calcium Canada
Cd Cadmium Democratic Republic of the Congo
Cf Californium Central African Republic
Cl Chlorine Chile
Cm Curium Cameroon
Cn Copernicium China
Co Cobalt Colombia
Cr Chromium Costa Rica
Cs Cesium Serbia and Montenegro
Cu Copper Cuba
Er Erbium Eritrea
Es Einsteinium Spain
Eu Europium Europe
Fm Fermium Federated States of Micronesia
Fr Francium France
Ga Gallium Gabon
Gd Gadolinium Grenada
Ge Germanium Georgia
In Indium India
Ir Iridium Iran
Kr Krypton South Korea
La Lanthanum Laos
Li Lithium Liechtenstein
Lr Lawrencium Liberia
Lu Lutetium Luxembourg
Lv Livermorium Latvia
Md Mendelevium Moldova
Mg Magnesium Madagascar
Mn Manganese Mongolia
Mo Molybdenum Macau
Mt Meitnerium Malta
Na Sodium Namibia
Ne Neon Niger
Ni Nickel Nicaragua
No Nobelium Norway
Np Neptunium Nepal
Os Osmium Oman
Pa Protactinium Panama
Pm Promethium Saint Pierre and Miquelon
Pr Praseodymium Puerto Rico
Pt Platinum Portugal
Re Rhenium Reunion
Ru Ruthenium Russia
Sb Antimony Solomon Islands
Sc Scandium Seychelles
Se Selenium Sweden
Sg Seaborgium Singapore
Si Silicon Slovenia
Sm Samarium San Marino
Sn Tin Senegal
Sr Strontium Suriname
Tc Technetium Turks and Caicos Islands
Th Thorium Thailand
Tm Thulium Turkmenistan
Elemental domain names that exist:
Silver.Ag
Beryllium.Be
Calcium.Ca
Cobalt.Co
Francium.Fr
Gallium.Ga
Indium.In
Krypton.Kr
Lanthanum.La
Lithium.Li
Mendelevium.Md
Platinum.Pt
Rhenium.Re
Ruthenium.Ru
Selenium.Se
Silicon.Si
Oh, let's do US states as well:
Al Aluminum Alabama
Ar Argon Arkansas
Ca Calcium California
Co Cobalt Colorado
Fl Flerovium Florida
Ga Gallium Georgia
In Indium Indiana
La Lanthanum Louisiana
Md Mendelevium Maryland
Mn Manganese Minnesota
Mo Molybdenum Missouri
Mt Meitnerium Montana
Nd Neodymium North Dakota
Ne Neon Nebraska
Pa Protactinium Pennsylvania
Sc Scandium South Carolina
Tony Finch – blog