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I think the formula of aluminate is AlO2 and valency is 1
An aluminate is a compound, containing aluminium and oxygen with more electropositive elements, a salt of the hypothetical aluminic acid.
Formula: AlO2-
SODIUM ALUMINATE IS SAME WITH SODIUM METAALUMINATRE
They are one prdoduct .There are two kinds of word for this
NaAlO2 with NA2AL2O4 .
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