How to calculate valencey of AlO3
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Answer:
Formula of aluminate is AlO₃ and valancey = -1
formula of chromate is CrO₄⁻² and valancey = 2
formula of aluminium is AL and valancey = 3
formula of cupric is Cu(ll) and valancey = 2
Explanation:
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Hey mate here your answer
Explanation:
Atomic number of aluminium is 13 so its electronic configuration is 2, 8, 3. Since it has 3 electrons in its valence shell, it will lose 3 electrons to complete its octet hence its valency is +3.
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