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These 15 elements have abbreviations that are also state abbreviations.
What is Al - aluminum, Ar - Argon, Ca - Calcium, Co - Cobalt, Ga - Gallium, In - Indium, La - Lanthanum,
Md - mendelevium, Mn - Manganese, Mo - Molybdenum,
Mt - Meitrerium, Ne - neon, Nd - Neodynium,
Pa - Protactinum, Sc - Scandium