Transition Metals Can Form a Variety of Coordination Compounds

Copper reacts only with hot concentrated sulfuric acid and nitric acid. Its two important oxidation states are +1 and +2. The +1 state is less stable and dispropor-tionates in solution  

All compounds of Cu(I) are diamagnetic and colorless except for CU2O, which is red. 

2 Transition Metais Can Form a Variety of Coordination Compounds 

Recaii that a compiex ion contains a oentrai metai ion bonded to one or more ions or moiecuies (see Section 11.7). 

Alfred Werner, who prepared and characterized many coordination compounds. In 1893, at the age of 26, Werner proposed what is now commonly referred to as Werner s coordination theory. 

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