TAILIEUCHUNG - Chapter 12: EDTA Titrations

Coordinate covalent bonds: a bond formed when both electrons of the bond are donated by one atom. [H3N: Ag :NH3]+ Ag+ + 2(:NH3) Electron configuration of Ag [Kr]4d105s15P0 Ag+ [Kr]4d105s0 5P0 Sp hybrid orbitals: accommodate 2 pairs of electrons. Linear Complex ion: A metal ion with Lewis base attached to it through coordinate covalent bond. Complex (Coordinate compound): a compound consisting either of complex ions and other ions of opposite charge or of neutral complex species. | Chapter 12 EDTA Titrations Review of Textbook for Chem115 116 Chapters 17 23 Complex coordinate compound Coordinate covalent bonds a bond formed when both electrons of the bond are donated by one atom. Ag 2 NH3 H3N Ag NH3 Electron configuration of Ag Kr 4d105s15P0 Ag Kr 4d105s0 5P0 Sp hybrid orbitals accommodate 2 pairs of electrons. Linear Complex ion A metal ion with Lewis base attached to it through coordinate covalent bond. Complex Coordinate compound a compound consisting either of complex ions and other ions of opposite charge or of neutral complex species. I. Basic Concepts and Terms A. Complex-Formation Reactions some elements mostly metal ions can form coordination compounds with molecules ions which have a spare pair of electrons. The central atom usually a metal cation accepts the pair of electrons from the donor molecule or ion to form a coordinate covalent bond. The empty orbitals of the cation and the orbital occupied by the bonding pair of electrons on the donor ion or molecule ligand form a new molecular orbital. The number of coordinate covalent bonds that a cation tends to form with individual ligands or functional groups on ligands is known as its coordination number. Typical values for coordination numbers are 2 4 and 6. The compounds formed can be neutral positively or negatively charged depending on the charge of the reacting .

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