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What is the electronic configuration of Cu2+ (Z= 29) of least position:
(1) [Ar]4s1 3d8
(2) [Ar]4s2, 3d10 4p1
(3) [Ar]4s1 3d10
(4) [Ar]3s9
Ans: [Ar]3s9
Which processes is used to harden a steel? Quenching process is used to harden the steel
Physical Properties of oils and Fats (a) Fats are solids, while oils are liquids. (b) They both are soluble in ether, chloroform and benzene although insoluble in water.
A chemical change takes place when one or more substances change into new substances. A chemical change is as well known as a chemical reaction. The emergence of new substances
Soaps and detergents Sodium and pottasium salts of fatty acids such as palmitic acid, stearic acid, oleic acid etc are called soaps, while detergents are ammonium or sulphonate
Penta valent element has one electron more than 4 electrons which could be used for conduction while the trivalent elements has 1 electron less , this can also be seen as a hole
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We are asked to design a qualitative analysis scheme that can be used to determine which cations are present in a solution containing only four of the following cations: Pb2+, Ag+,
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