Ncert Exercises & Solutions

Examine the types of overlaps shown in the following figure and select all the correct statements:

A.	In figure (I), the net overlap is zero.
B.	In figure (II), no overlap occurs due to different symmetry.
C.	In figure (I), the bond formation does not occur.
D.	In figure (II), bond formation occurs.

1. A and B only
2. A, B and C
3. B and D only
4. A and C only

Hint: Atomic orbitals must overlap in the same phase and symmetry.

In the figure (I), are of ++ overlap is equal to + - overlap, so net overlap is zero, while in figure (II), there is no overlap due to different symmetry.

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