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#bonding in KO2question..
How do impurities and temperature affect electrical resistivity of metals? Ans: Temperature effect on resistivity: Any increase in temperature of a conductor increase
What is the purpose of zone refining One refining process is based on the fact that the first solid to crystallize in a two component system is usually purer than the liquid as
Nucleophilic Replacement Reactions (i) Several replacement reactions, majorly at the saturated carbon atom in aliphatic compounds like alkyl halides, are brought about by nucl
Why do zinc hydroxide, aluminium hydroxide and lead (II) hydroxide dissolve in excess aqueous sodium hydroxide?
Q. Show the Extraction of Oxygen? Oxygen is separated from air on a large scale by the fractional distillation of liquid air. It is obtained as a by-product along with hydrogen
Calculation of Number of Atoms per Unit Cell of HCP (n): One half of the each of the 2 base centre atoms (2x1/2), one six of the every of the 12 corner atoms (12x1/6) and all
Chloroform or trichloromethane, CHCl 3 It is a significant trihalogen derivative of methane. It was given by Liebig in year 1831 and its name chloroform was proposed by Dumas
Q. Describe about groups or families in periodic table? Every element may be represented by a one or two letter symbol. In the middle of nineteenth century a Russian chemist Dm
The formal charge on the hydrogens are The formal charge on all the hydrogens is 0. For the other atoms: (a) Nitrogen has a complete octet and a formal charge of 0. (b) B
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