In an sp2 hybridized atom, we saw that there was one unhybridized 2p orbital. How many unhybridized 2p orbitals remain on an atom that has sp3 hybrid orbitals? A. One. B. Two. C. Three. D. None.

The number of unhybridized 2p orbitals that remains on an atom that has sp3 hybrid orbital is : ( D ) None

The hybridization of an s orbital with three p orbitals will yield four sp3 hybrid orbitals, which means that there will be no unhybridized 2p orbitals left.

This is because during the hybridization, the number of hybrid orbitals yielded must be equal to the combined number of atomic orbitals that yielded the Hybrid orbitals.

Hence we can conclude that the number of unhybridized 2p orbitals that remain on an atom that has sp3 hybrid orbital is zero ( None )

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None

Explanation:

We must recall that the number of hybrid orbitals formed must be equal to the number of atomic orbitals that were combined. Hence, if we have an sp3 hybridized orbital, there are four hybrid orbitals formed.

Since there are four hybrid orbitals formed from the three p and one s orbital that combined, there is no unhybridized orbital left.

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i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)