Write electron configuration for the following ions: (5) (i) Fe3+ (ii) Cr3+ (iii) Pb2+ (iv) Pb 4+ (v) O2

Write electron configuration for the following ions: (5) (i) Fe3+ (ii)

1.	Write electron configuration for the following ions: (5) (i) Fe3+ (ii) Cr3+ (iii) Pb2+ (iv) Pb 4+ (v) O2
Answer» Fe3+=1s2 2s2 2p6 3S2 3p6 4S2 3d3 Cr3+=1s2 2s2 2p6 3s2 3p6 4s2 3d1 Pb2+= [XE] 6s2 4f14 5d10 Pb4+= [Xe] 4f14 5d10 O2= 1s2 2s2 2p6 3s2 3P4