1) I has 7 valence, 4 added through bonds - 1 for + charge = 10(over)
2) Se has 6 valence, 4 added through bonds = 10
3) P has 5 valence, 4 added through bonds - 1 for + charge = 8 (bingo)
4) I has 7 valence, 3 added through bonds = 10
5) Br has 7 valence, 4 added through bonds + 1 for - charge = 12 (over)
