Q.

Which of the following is the configuration of second excited state to the element iso electronic with Si2 or  p or Cl+

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a

[Ne]3s1  3px1  3p1y3p1z3d1xy3d1yz

b

[Ne]3s23p2x3py13p1z

c

[Ne ]3s2

d

[Ne]3s2  3p1x  3p1z  3d1xy

answer is C.

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Detailed Solution

Si+2, P- and Cl+ have 16 electrons.

The ground state configuration is, [Ne]3s23p4

The configuration of second excited state is, [Ne]3s1  3px1  3p1y3p1z3d1xy3d1yz

Hence the correct answer is  option(C).

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