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This cycloaddition reaction involves sixteen electrons; hence, it must be suprafacial on one component and antarafacial on the other. Thus, it must be a [14s + 2a] or a [14a + 2s] cycloaddition. The heptafulvene molecule is large enough that its p-electron system can twist without introducing too much strain or without losing too much p-electron overlap; hence, the cycloaddition is a [14a + 2s] process. In either case, the product has the following stereochemistry:
brief explanation of claudes method of liquefication of g gases
Q. Describe Dalton Law of Partial Pressure? Ans. According to the Kinetic Molecular Theory, the pressure-volume- temperature relationship is the same for all gases. This
Which of the following ions is not having the configuration of neon: (1) F - (2) Mg +2 (3) Na + (4
procedure and curves for radiometric titration
Q. How to evaluate mass number? An isotope of an element is recognized by its mass number which is the sum of the number of protons and neutrons in the atom's nucleus. Mas
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Formic acid is a weak acid along with a pKa of 3.75. The name comes by the Latin term "formica" ("ant") since this is very plentiful into the secretions of several species of ants,
give the mechanism of additin of HCN to acetaldehyde?????
what groups comprise each block of elements(s,p.d and f blocks)in the periodic table
The present atomic weight scale is based on: (1) C 12 (2) O 16 (3) H 1 (4)C 13 Ans: C 12
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