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Ch 20 Notes - Electron configurations what is the electron...

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Electron configurations - what is the electron configuration of neutral Cu? o [Ar] 4s 1 3d 10 - what is the electron configuration of Cu 3+ ? o [Ar] 3d 8 trends - atomic radius o same in general on what we see for main group elements, but a lot of exceptions - ionization energy o increases going across - electronegativity o applies to covalent bonding which metals do not participate in coordination compounds - complex ion- an ion that contains a central metal ion bound to one or more ligands (transition metals usually for the central metal ion) - ligand- a neutral molecule or an ion that acts as a lewis base with the central metal ion in a complex ion o ligand needs at least one lone pair of electrons - coordination compound- neutral compound made when a complex ion combines with one or more counter ions o eg. [Co (NH 3 ) 6 ] 3+ and 3Cl - [Co(NH 3 ) 6 ]Cl 3 - coordinate covalent bond- the bond formed when a ligand donates electrons to an empty orbital of a metal in a complex ion -
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