Jørgensen regards a chain of four ammonia groups to be particularly stable. When we count isomers, we should not break up four-ammonia chains.

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This is correct. The Werner structure could have Cl groups across from or next to each other. The Jørgensen structure would not be expected to form isomers because Cl can bond in only one way.

As you can see, my theory predicts two isomers for this compound whereas Jørgensen's does not. This might serve as a test of our theories. A metal ammine with two Cl groups should not have isomers according to Jørgensen's theory. According to my theory, it can.

Remember that my structures show stereoisomerism. I think some coordination compounds have isomers because groups can be oriented across from or next to each other.

Think about what you have learned about isomers. What kind of isomers can coordination theory structures form?

As you can see, Werner's theory predicts two isomers for this compound whereas mine does not. This might serve as a test of our theories. A metal ammine with two Cl groups should not have isomers according to my theory. According to Werner, it can.

Remember that my structures show structural isomerism. I think compounds containing the NO2 groups will show isomers because the group can bond either through N or O. I wouldn't expect ammines containing only Cl to show isomers: Cl can only bond in one way.

Think about what you have learned about isomers. What kind of isomers can chain structures form?