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The hydride ions H- are isoelectronic with: (1) Li (2) He + (3) He (4) Be Ans: He
Number of unpaired electrons in Mn 4+ is: (1) 3 (2) 5 (3) 6 (4) 4 Ans: 3
Imidazole Imidazole has one nitrogen that has the electronic character of the nitrogen in pyrrole, and one that is like the nitrogen in pyridine, except that it is somewhat m
prepare a project corrosion of iron
examples and uses of separation technique
a. How can a colloidal solution and true solution of the similar colour be distinguished from each other? b. Give four applications of adsorption
Metals: Iron : 1. Most automobiles, machine tools, building parts, the hulls of large ships, and machine parts are made out of iron. (Iron metal is strong but is quite
Solid xenon forms crystals with a face centered unit cell that has an edge of 620 pm. 1. calculate the atomic radius of xenon. 2. calculate the packing efficiency if xenon. So
Question 1: a. Describe in details the composting process. b. Odour is very often a big problem in composting facilities. Describe some odour avoidance and odour treatment
Physical properties of Ethers - Boiling points and Solubility (a) Boiling points: Boiling points of ethers are very much lower as compared to those of isomeric alcohols, althou
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