Consider the shown proton on each compound and identify which is most acidic.

The lone pairs of electrons on the nitrogen atom in the following compound are located in which orbital?

The lone pair of electrons in the methyl anion, :CH3–, resides in which orbital?

Delocalization of electrons over two or more atoms ________ a molecule.

Identify the resonance hybrid for the following structure.

Bonus question Tryptophan, shown below, is an essential amino acid that is important in the synthesis of the neurotransmitter serotonin.. Rank the indicated protons in order of increasing acidity.

Which of the following resonance structures makes the largest contribution to the hybrid structure of [H2CCHO] −?

Which of the following species is the strongest base?

What is the molecular geometry around the boron atom in BH3?

Which of the following is the correct bond-line structure for CH3C≡C(CH2)3C(CH3)2CH2OCH3?