Hafnium, logam Hf, nomer atom 72, bobot atom 178,49, minangka logam transisi abu-abu perak mengkilat. Hafnium nduweni enem isotop stabil alamiah: hafnium 174, 176, 177, 178, 179, lan 180. Hafnium ora bereaksi karo asam hidroklorat encer, asam sulfat encer, lan larutan alkali sing kuwat, nanging ...
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