Which statement about hybridization in t...

Which statement about hybridization in the following is not correct ?

Hybridization is the mixing of atomic orbitals prior to their combining into molecular orbitals

`sp^2` hydbrid orbitals are formed from two p atomic orbitals and one S atomic orbital

`d^2sp^3` hybrid orbitals are directed towards the corners of a regular octahedron

`sp^3d` hybridd orbitals are all at `90^@` to one another

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To solve the question about which statement regarding hybridization is not correct, we will analyze each statement one by one. ### Step-by-Step Solution: 1. **Understanding Hybridization**: - Hybridization is the process of mixing atomic orbitals to form new hybrid orbitals that are suitable for the pairing of electrons to form chemical bonds in molecular geometry. 2. **Analyzing Statement 1**: - **Statement**: "Hybridization is the mixing of atomic orbitals prior to combining into molecular orbitals." - **Evaluation**: This statement is true. Hybridization involves the mixing of atomic orbitals (like s, p, d) to create new hybrid orbitals that participate in bonding. 3. **Analyzing Statement 2**: - **Statement**: "sp² hybrid orbitals are formed by 2p atomic orbitals and 1s atomic orbital." - **Evaluation**: This statement is also true. In sp² hybridization, one s orbital and two p orbitals mix to form three equivalent sp² hybrid orbitals. 4. **Analyzing Statement 3**: - **Statement**: "d²sp³ hybrid orbitals are directed towards the corners of a regular octahedron." - **Evaluation**: This statement is true. The d²sp³ hybridization leads to an octahedral geometry where the hybrid orbitals point towards the corners of an octahedron. 5. **Analyzing Statement 4**: - **Statement**: "sp³ hybrid orbitals are all at 90 degrees to one another." - **Evaluation**: This statement is false. In sp³ hybridization, the four hybrid orbitals are arranged in a tetrahedral geometry with bond angles of approximately 109.5 degrees, not 90 degrees. 6. **Conclusion**: - The statement that is not correct is Statement 4: "sp³ hybrid orbitals are all at 90 degrees to one another." Therefore, the answer to the question is Statement 4. ### Final Answer: The statement that is not correct about hybridization is: "sp³ hybrid orbitals are all at 90 degrees to one another."

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