Which is the correct
K_(sp)
expression for
Mg_(3)(PO_(4))_(2)(s)
dissolving in water?
K_(SP)=[Mg^(2+)]^(2)[PO_(4)^(3)-]^(3)
K_(SP)=[Mg^(2)+1PPO_(4)^(3)]
K_(sp)=[Mgg^(2)+]^(3)[P^(3)]^(3)[O^(2)]^(4)
K_(SP)=[Mg^(2+)]^(3)[PO_(4)^(3)]^(2)