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O nióbio é um metal encontrado em jazidas naturais, principalmente na firma de óxidos. Em uma jazida que contenha nióbio com número de oxidação +5, a formula do óxido predominante desse metal corresponde
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O nióbio é um metal encontrado em jazidas naturais, principalmente na firma de óxidos. Em uma jazida que contenha nióbio com número de oxidação +5, a formula do óxido predominante desse metal corresponde a:

User Diegogs
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Answer:

what

Step-by-step explanation:

User RashFlash
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