5 posts • Page 1 of 1
I understand that standard covalent bonds between nonmetals are composed of sigma and pi bonds, but how exactly does a covalent bond form between a TM cation and a nonmetal? Does it have something to do with the d-orbitals?
The coordinate covalent bond between a nonmetal and a TM metal is "provided" by the nonmetal in the form of an extra lone pair. For example, if we are discussing a coordinate covalent bond between Cl- and Pb2+, the bond between one chlorine atom and one lead atom would be provided by one valence electron lone pair on Cl-, since Pb2+ has no additional electrons to share.
When talking about coordinate covalent bonds, we want to look at the lone pairs in order to determine whether a bond will form, not the charges. We need to check that an atom has a lone pair of electrons that it can donate, so a coordinate covalent bond can form.
Who is online
Users browsing this forum: No registered users and 1 guest