Question

give the formula and valency of

1 aluminate

2 chromium

3 aluminium

4 cupric

Answer 1

1. AlO2. Valency -1
2. CrK2O4 Valency 3+
3. Al Valency 3+
4. Cu. Valency 2+

Answer 2

hi friend . here ,s is your answer .....____


element name -formulae -valence

1.aluminate -AlO2 - (-1)

2.chromium -Cr-6

3.aluminium -Al-3

4. cupric -Cu-2

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