| Column - I | Column - II |
| (A) dx2-y2 atomic orbital | (P) One nodal plane |
| (B) py atomic orbital | (Q) Two nodal planes |
| (C) σPx molecular orbital | (R) ψ (g) [gerade] |
| (D) π*Py molecular orbital | (S) ψ (u) [Ungerade] |
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No. of nodal planes = 2
has even no. of nodal planes hence it is gerade (i.e. ψg )

No. of nodal plane =1
py has odd no of nodal planes hence it is ungerade (i.e. ψu )

No. of nodal plane = 0
M.O. has even no of nodal planes hence it is gerade (i.e.ψg )

No. of nodal plane = 2
has even no of nodal plane hence it is gerade (i.e. ψg )