钽酸根离子是含钽的阴离子,含有这种阴离子的盐称作钽酸盐。一个在商业上重要的例子是氟钽酸根离子(TaF72-)及其钾盐(K2TaF7)。

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氟钽酸钾。

的许多氧化物都称作钽酸盐。它们被视为“钽酸”的衍生物,即一种假想化合物,分子式为Ta2O5·nH2O[1]或HTaO3[2]。例子包括钽酸锂(LiTaO3)、钽酸镥(LuTaO4)、钽酸钕(NdTaO4)和钽酸铅钪(PST或Pb(ScxTa1-x)O3)。

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