(a) If the valence atomic orbitals of an atom are sp hybridized,how many unhybridized p orbitals remain in thevalence shell? How many π bonds can the atom form?(b) Imagine that you could hold two atoms that are bondedtogether, twist them, and not change the bond length.Would it be easier to twist (rotate) around a single σ bondor around a double (σ plus π) bond, or would they be thesame?

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