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Q. What are the Ligands?
Ligands: The ions and/or molecules which are directly attached to the central atom/ion are called ligands. A ligand could be an iron, an atom or a neutral molecule but should contain at least one atom which can donate a pair of electrons to the metal ion for the bond formation.
Since the ligands are directly attached to the metal ion. They are said to be in the first coordination sphere of the central atom. In writing the formula of a complex, the metal ion and all the ligands are put in square brackets. The sum total of all the ligands so attached to the metal ion is called the coordination number of the metal. For example, in a compound like [Ag (NH3)21CI, there are two ammonia molecules acting as ligands and are said to be in the first coordination sphere of the Al+ ion. The coordination number of Al+ ion in the complex is 2.
Edible colours - Chemicals in food Edible colours employed for food are mainly dyes. The make use of food dyes is specifically wide spread. They are utilized to colour everythi
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Metal carbonyls of transition elements constitute another important class of organometallic compounds. All d-block elements which contain only carbonyl ligands are called homolepti
If the atomic weight of an element is 23 times that of the lightest element and it has 11 protons, then it contains : (1)11 protons, 23 neutrons, 11 electrons (2)11 protons,
The set of quantum numbers n= 3, l=0, m=0, s= -1/2 belongs to the element: (1) Mg (2) Na (3) Ne (4) F Ans: Mg
Physical properties of Glucose 1. Glucose is a colourless crystalline solid, melts at 146° C. 2. Glucose is readily soluble in water. 3. From aqueous solution,Glucose se
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Explain about Parke Process? Parke method for refining lead, which is also a concentration process for silver, relies upon the selective dissolution of silver in molten zinc.
In the reactant SO2 + O2 , then in the product it became SO3 , how?
As already discussed, the reduction of the metallic oxide usually heating it with some reducing agent such as carbon, carbon monoxide, hydrogen or some other metal. The reducing ag
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