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Reductions Involving Aldehydes or Ketones

Hybridised or...

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Hybridised orbitals form only sigma bonds?

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Q. Rules of hybridization say that hybrid orbitals form only sigma bonds. However, unsaturated hydrocarbons like (ethylene and acetylene) possess multiple bonds between carbons.

Q. Answer the given statements as True (T) or false (F).

1. The orbitals which have equivalent energy can take part in hybridisation.
2. The number of hybrid orbitals is equal to the number of atomic orbitals mixed.
3. Hybridisation is a hypothetical concept which includes the mixing of electrons.
4. A hybrid orbital only forms

σ

Q. Consider the following statements:
I.A sigma

(σ)

bond is formed when two s-orbitals overlap.
II.A

p i (π)

bond is formed when two p-orbitals axially overlap.
III.A

σ

-bond is weaker than

π -

bond.
Which of the above statement is/are correct?

Q. If true enter 1, else enter 0.
The hybridized orbitals always form

σ

Q. The no. of sigma bonds formed in ethane by the overlapping of

{s p}^{3} - {s p}^{3}

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