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Across 1. 1,2-_______________ , abbreviated as 'en' (13) 4. A common carboxylic acid bidentate ligand (12) 7. A charged complex (7,3) 10. Name used when water acts as a ligand (4) 11. A ligand that is able to make multiple bonds to the central atom or ion (11)

Down 2. Formed when six cyanide ions complex with an iron (II) ion. ______________ (II) (16) 3. An important hexadentate ligand that has a 4+ charge. 5. A central atom bound to ligands, sometimes called a coordination compound (7) 6. A ligand that makes two bonds to the central atom or ion (9) 8. Any atom or molecule attached to a central atom by donating an electron-pair to form a coordinate bond (6) 9. Another name for a coordinate bond (6)