1. A Review of General Chemistry

Which hybridization scheme occurs about nitrogen when nitrogen forms a ${=}^2$ double bond?

In ${\mathrm{sp}}^2$-hybridized orbitals, how many unhybridized $p$-orbitals remain available to form multiple bonds?

In methanol (${\mathrm{CH}}_3\mathrm{OH}$), what types of atomic orbitals are used to form the sigma bonds between carbon, hydrogen, and oxygen atoms?

Given the molecule ${\mathrm{CH}}_{2}O$ (formaldehyde), predict the hybridization and geometry around the central carbon atom.

Given the molecule ${\mathrm{CH}}_2={\mathrm{CH}}_2$ (ethene), what is the hybridization of each carbon atom?

Which atomic orbitals from carbon hybridize to form the bonds in ${\mathrm{CH}}_4$?

What are the hybridization states for the carbon atoms in ethene ($C_2{H}_4$)?