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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:
For d electrons, the azimuthal quantum number is: (1) 0 (2) 1 (3) 2 (4) 3 Ans: 2
Dihydric alcohols - Hydrocarbon These are compound consisting of two hydroxyl sets. These are dihydroxy components of alkanes. Their common formula is A n H 2n+2 O 2 . The very
WATER =1.3330 SEAWATER=1.33940 OIL=1.5204
What happens when complex compounds consist of legand?
mathematical essay about it
The energy of an electron in the first Bohr orbit of H atom is-13.6eV . The possible energy value(s) of the excited state(s) for electrons in Bohr orbits to hydrogen is(are):
Q. Describe about Coordination compounds? The complexes show a wide variety of physical and chemical properties which are quite different from normal salts. These differences
Calculate the combustion energies for the burning of 1 mol of propane and butane. It can be supposed that all reactants and products are obtained under standard conditions.
Q. A sample of water analysis was found to contain temporary magnesium hardness 25 mg/L. Permanent magnesium chloride hardness 15 mg/L and permanent calcium sulphate hardness 20
Q. How can we obtain Boron? Boron is- obtained by the red-action of B 2 O 3 with magnesium or sodium B 2 0 3 is first prepared by strongly katingH 3 B0 3 which is obtained b
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