Give the electronic configuration of the following particles:

 

Q. Give the electronic configuration of the following particles:

            (a)       5c3+     (b)       Br-       (c) pb1y pb2+   (d)  Fe, Fe2+1y Fe3+

                       Solution:

            (a)       21 5c3+ = [Ar], 3d0, 4s0

5c3+ = 152, 2s2, 2p6, 3s2, 3p6

                       (b)       Br- (Atomic no. 35)

                        No of electrons in Br- = 36

                        Br- = 152, 252, 2p6, 352, 3p6, 3d10, 4s2, 4p6

                      (c)       Pb2+ (Atomic no 82)

                        No of electrons in pb2+ = (82-2)

                                                                 = 80

                        Pb = 152, 252, 2p6, 352, 3p6, 3d10, 4s2, 4p6, 4d10, 4f14, 5s2, 5p6, 5d10, 5f0, 6s2, 6p2.


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