Question

Each carbon in ethene (CxH) is hybridised. a. Draw the Lewis diagram for ethene and indicate the hybridisation state for the carbons. [2 marks] b. Draw the orbital diagram for the hybridised carbons in ethene, clearly showing the hybrid carbon orbitals, as well as the electrons that they hold. [3 marks] For reference, the ground state orbitals for an unhybridised carbon have been included on the left. Hint: You need only consider what happens to the electrons in the n-2 orbitals in the hybridised state. Potential energy ground state Potential energy hybridised state Ground state Hybridised state

Answer 1

Hybridized sp² orbitals will have energy in-between 2s & 2p

NOTE:

1. They forgot to draw one more 2p orbital in left-side ground state top position. Because they clearly mention as ethene (C₂H₄), there should be 2 electrons in 2p orbital.

2. You need not to require to draw RED color dotted line, its just for understanding purpose only.

Each carbon in ethene (CH) is hybridised a. Draw the Lewis diagram for ethene and indicate the hybridisation state for the carbons. [2 marks] b. Draw the orbital diagram for the hybridised carbons in ethene, clearly showing the hybrid carbon orbitals, as well as the electrons that they hold. [3 marks] For reference, the ground state orbitals for an unhybridised carbon have been included on the left. Hint: You need only consider what happens to the electrons in the n-2 orbitals in the hybridised state. HH C= Ć HH Potential energy ground state Potential energy hybridised state 1 1 1 Ground Hybridised

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