Coordination compounds

3. The region around the central atom where ligands donate electron density.
6. The hypothetical charge an atom would have if all bonds to atoms of different elements were 100% ionic.
8. Complexes with maximum unpaired electrons due to weak-field ligands.
13. Complexes with paired electrons due to strong-field ligands.
14. A ligand that can coordinate through two different atoms but only one at a time.
15. A ligand that has two donor atoms to bind to a central metal.
17. The number of ligand donor atoms bonded to the central metal atom or ion.
19. Involves d-orbitals from the (n-1)th shell during bonding in low-spin complexes.
20. The pairing of electrons in the same orbital due to ligand field effects.
21. The effect of the electric fields created by ligands on the d-orbitals of the central metal ion.
22. The energy difference between d-orbitals in a ligand field.
23. A pair of electrons that is shared between atoms or donated by a ligand.
24. Equilibrium constant for the formation of a complex from its components.
25. Occurs when a ligand can coordinate to the metal in two different ways.
26. Different arrangements of atoms that result in different compounds.
27. Replacement of one ligand in a complex with another.
28. Isomerism in which isomers are non-superimposable mirror images.
29. Theories that describe bonding in coordination compounds such as CFT or MOT.

1. The atom in a ligand that donates a lone pair to the metal center.
2. Isomerism due to the exchange of water molecules inside and outside coordination sphere.
4. Isomerism in coordination compounds due to different spatial arrangements around the metal.
5. Isomerism due to different spatial arrangements of ligands.
7. Isomerism arising from exchange of ligands between cationic and anionic complexes.
9. An empirical arrangement of ligands based on the strength of the field they generate.
10. The central metal atom/ion and the ligands directly attached to it.
11. A ligand with multiple donor atoms that can bind to a metal ion.
12. A ligand that forms more than one bond with a single metal ion.
16. Involves d-orbitals from the nth shell during bonding in high-spin complexes.
18. Isomers produce different ions in solution though their composition is same.
21. An electronic transition between metal and ligand orbitals involving charge redistribution.