Question

Give the formula and valency of:
a) Aluminate
b) Chromate
c) Aluminium
d) Cupric

Answer 1

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
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