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The π electrons of a conjugated molecule can be modeled as a particle in a box where the box length is a little more than the length of the conjugated chain. The Pauli exclusion principle permits no more than two electrons to occupy every energy state. For a conjugated hydrocarbon chain molecule with three double bonds (CH2=CH-CH=CH-CH=CH2), determine the wavelength of radiation absorbed when the π electron is excited from the highest-occupied state to the lowest vacant state.
Limitations of flame photometry: The limitations of the techniques involve the following. The low temperature of the natural gas and air flame limits a method to simply
Calculate the force constant of CF4 and SiF4 and compare their relative strengths with each other. The heats of formation of CF 4 and SiF 4 are -1222 kJmol -1 and -1615
Q. How many centigrams are in 5 kilograms? Two conversion factors are essential to solve this problem. Keep in mind that there are 1000 grams in a kilogram and 100 centigrams i
Block diagram of atomic fluorescence spectrometry: The instrumentation for AFS consists of atom reservoir that might be a flame or a furnace etc., a basic source emitting the
The number of unpaired electrons in nitrogen is: (1) 1 (2) 3 (3) 2 (4) None of these Ans: 3
(a) Given the values below, Determine the concentration of benzoyl peroxide needed to prepare polystyrene with a number average molar mass of 400,000 by bulk free radical polymeris
assignment on electrochemical series
tell me about liquification of gases in detail but in most easy words
The Vermont Wind Assessment Program led by Vermont Tech has measured the wind velocity at 25 locations in the state of Vermont in 2005 and 2006 . The results are provided in the
What is sublimation?
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