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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.
if the bond length in chlorine molecule is 1.98 angstrom and bond length in H-CL molecule is 1.76 angstrom calculate the covalent radius of hydrogen
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Demonstrate the effect of foaming in preparation of cold and hot souffles? After undertaking this activity, you will be able to: • learn how to prepare hot and cold souffle,
Isoelectric point - physical characteristic of proteins Each protein has a characteristic isoelectric point for which its ionisation is minimum. Such as amino acids, proteins,
A Galvanic cell or voltaic cell or electrochemical cell is a system in which a spontaneous chemical oxidation- reduction happens and makes electrical energy.
i want some solved numerical problems on this topic
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