xElements Collectible Cards

xElements Collectible Cards are unique digital cards released exclusively on the Proton blockchain. The Original Collection consists of one NFT card for each of the 118 elements in the periodic table. The edition size of each card (i.e. the maximum number that can be minted) is limited to the element's 'proton number', being the number of protons in the atom of that element. The rarest card is Hydrogen (only 1 minted), then Helium (only 2 minted) and so on, with a maximum supply of 7021 unique cards, being the sum of integers from 1 to 118. xElements Collectible Cards are color-coded by element group, such as rare-earth metals, noble gases and halogens. Very few complete groups can be collected due to the extreme scarcity of the lowest numbered cards. Additionally, numbers 1-8 bear a special 'ultra rare' badge not seen on other cards. Collect, share and have fun with xElements Collectible Cards!