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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:
Which geometry does have Formaldehyde molecule The formaldehyde molecule has trigonal planar geometry. Therefore, both the H-C-H bond angle and the H-CAO bond angle are abou
define explosive
find the equlant mass of 2M HCL?
The number of neutron in tritium is : (1) 1 (2) 2 (4) 3 (4) 0 Ans: 2
If change in energy (ΔE) = 3x 10 -8 j, h= 6.64x 10 -34 j-s and c= 3x 10 8 m/s then wavelength of the light is: (1) 6.36x 10 3 Å (2) 6.36x 10 5 Å
describe the various types of velocities?
Draw a figure to show splitting of degenerate d orbitals in an octahedral crystal field. How does the magnitude of decide the real configuration old orbitals in a difficult enti
Versatile nature of Carbon-Catenation The chemical compounds can be mainly classified into two main categories. These are organic and inorganic. More than 90 elements are in
Q. What is alpha radiation? Types of radiation there are three principal types of radiation are given off during radioactive decay. One kind is alpha radiation (α-radiation)
Nitrogen has the electronic configuration 1s 2 , 2s 2 , 2p 1 x , 2p 1 y , 2 p 1 z and not 1s 2 , 2s 2 , 2p 2 x , 2p 1 y , 2 p 0 z which is determined by: (1) Aufb
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