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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:
Q. Distribution coefficients of the salts? The distribution coefficients of the salts of lanthanide elements between organic and water solvents are slightly different. Thus, th
The number of appositively charged ions surrounded a certain ion in an ionic crystal lattice is known as co- ordination number.
Q. Describe Linkage Isomerism? Some ligands can coordinate to the metal through different donor ato...s present in the ligand. They are called ambidentate ligands and they can
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Q. What do you mean by Descriptors? Descriptors are selected terms used to describe the sensory attributes of products and vary from one product to the other. The chosen descri
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The specific charge of proton is 9.6 X 10 6 CKG -1 then for an α-particle it will be : (1) 38.4X 10 7 Ckg -1 (2) 19.2x 10 7 Ckg -1 (3) 2.4 x 10
The radius of which of the following orbit is same as that of the first Bohr's orbit of hydrogen atom: (1) He + (n= 2) (2) Li 2+ ( n= 2) (3) Li 2
Are there any disadvatages of mass spectrometry
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