Question

Which explanation best predicts which species has the smaller bond angle, ClO4− or ClO3−. Which explanation best predicts which species has the smaller bond angle, or . ClO4− will have the smaller bond angle since the chlorine atom must expand its octet to accommodate four oxygen atoms, thus increasing the potential repulsion between each bonding pair of electrons.

ClO4− will have the smaller bond angle since it has more electron groups with a total of four electron groups, and more electrons groups will require smaller bond angles to fit around the central atom.

ClO3− will have the smaller bonding angle since it contains fewer electron groups with only three electron groups total, and fewer electron groups means that each has a greater repulsion.

ClO3− will have the smaller bonding angle since it contains one lone pair of electrons, and lone pair–bonding pair repulsions are greater than bonding pair– bonding pair repulsions.

Answer 1

109 28 c.

So last explanation is correct.

ClO3^- will have the smaller bonding angle since it contains one lone pair of electrons, and lone pair-bonding pair repulsions are greater than bonding pair-bonding pair repulsions.