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Q. Illustrate about Werners Theory?
Based on the study of a large number of compounds. Wermer gave the following postulates:
• Metal atoms in complexes possess two types of valences namely. Principal or an auxiliary or secondary.
• Primary valencies are always satisfied by anions but the secondary valencies can be satisfied either by anions and/or neutral molecules.
• Every metal atom has a fixed number of auxiliary valencies.
The secondary valencies show directional properties. In other words secondary valencies are directed in space around the central ion.
i just need to know if anyone that might know of a website that has the answer key to the book chemistry Prentice Hall Brief Review 2013
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The valency of phosphorus in H3 PO 4 is: (1) 2 (2) 5 (3) 4 (4) 1 Ans: 5
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