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Organic molecule: Hybrid orbitals overlap 1. CH4: sp3 - s overlap only 2. C2H6: sp3 – sp3 overlap and sp3 – s overlap 3. C2H4: sp2 – sp2 overlap only Which of the following combinations are correct? 

Organic molecule: Hybrid orbitals overlap 1. CH4: sp3 - s overlap only 2. C2H6: sp3 – sp3 overlap and sp3 – s overlap 3. C2H4: sp2 – sp2 overlap only Which of the following combinations are correct?  Correct Answer 1 and 2 only 

In CH4 molecule, the hybridisation is sp3 and all the four hybrid orbitals will overlap with s orbital of H.

In C2H6, hybridisation of both the carbon atoms are sp3, hence between carbon atoms, sp3 – sp3 overlapping is present and between C and H, sp3 – s overlapping is present.

In C2H4, hybridisation of both the carbon atoms are sp2, hence between carbon atoms, sp2 – sp2 overlapping is present and between C and H, sp2 – s overlapping is present.

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