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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:
Illustrate that for correct mass balance, relative amounts of two co-existing phases or microconstituents must be given by lever principle. Ans: Using lever rule
why mercury been liquid?
how to express nernst equation by daniel cell? as we have taken mass of subsstance insted of concentration
dithiazone.
Uses of Proteins (a) Proteins constitute as necessary part of our food. Meat, eggs, fish, cheese offer proteins to human beings. (b) In textile: Casein (a milk protein) is u
The aluminum foil on a certain roll has a total area of 18.5m2 and a mass of 1275g. Using a density of 2.7g per cubic centimeter for aluminum, determine the thickness in millimeter
Which one is the electronic configuration of Fe +2 : (1) 1s 2, 2s 2 , 2p 6 , 3s 2 , 3p 6 , 3d 6 (2) 1s 2 , 2s 2 , 2p 6 , 3s 2 , 3p 4 , 4s 2 (3) 1s 2 , 2s 2 ,
He- is p block element
what are ionization energy of actinides?
Hard magnetic material is characterized by Hard magnetic material is characterized by two substance:- a) High residual magnetic induction.. b) High coercive force
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