Question

When hybrid orbitals overlap, what type of bonds form?

Answer 1

Sigma or pi

Explanation:

Sigma bonds are the first bonds that form (in the realm of covalent bonding) and you can imagine them as a direct connection between the two nuclei involved.
Pi bonds only form in `sp^2` or `sp` hybridized species, where there is a lateral overlap of two hybrid orbitals:

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