Which choice identifies the spectator ions in the following reaction?

Question

3Pb[NO3]2 [aq] + Mg3 [PO4]2 [aq] ---------->

Pb3[PO4]2 [s] + 3Mg [NO3]2 [aq]

[a] Mg[2+] , NO[3-]

[b] Mg [2+] , PO4[3-]

[c] Pb[2+] , NO3-

[d] Pb[2+] , PO4[3-]

Answer 1

choice A is the spectator ions :)