Z3(SO4)2
ZSO4
Z2 SO4
Z2(SO4)3
Correct answer is D
Z = 1s2 2s2 2p6 3s2 3p1
∴ We have Z^{3+} and SO_4 ^{2-}
The reaction : Z^{3+} + SO_4 ^{2-} \to Z_2(SO_4)_3.
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