a) Na+ i OH-
b) 2K+ i SO4 2-
c) Ca2+ i CO3 2-
d) 3Mg2+ i 2PO4 3-
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a) Na+ i OH-
b) 2K+ i SO4 2-
c) Ca2+ i CO3 2-
d) 3Mg2+ i 2PO4 3-