Which of the following represents Hund’s rule? A. No two electrons can have the same set of quantum numbers. B. The electrons are added to lower energy atomic orbitals before higher energy orbitals. C. Unpaired spins are maximized in lowest energy configurations for degenerate orbitals. D. The position and momentum of a particle cannot be known precisely at the same time.

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A: Ka = 2.51x10-5  

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Q: D. When the alkyl bromides (listed here) were subjected to hydrolysis in a mixture of ethanol and wa...

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Q: Which of the following structural formulas represent identical compounds and which represent constit...

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A: The conversion of cyclohexene into cis-Cyclohexane-1,2-diol is given by:

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Quantum Chemistry

Quantum chemistry deals with the properties of chemical systems and their reactions. The branch of chemistry which is more concerned with quantum chemistry is physical chemistry. It is a more sophisticated field of theoretical physics which is concerned towards the application of physical concepts towards various chemical aspects such as, formation of atoms, chemical structure descriptions, chemical bond strength, hybridization, conjugation etc. Quantum chemistry mainly studies the various states i.e., ground state, excited state, transition states of the individual atoms or molecules taking place during any chemical reaction. The laws of motion explained by various scientists, which are termed as “classical mechanics” were not acceptable in terms of electrons, protons, atoms, light etc. Thus, a new theory named “quantum mechanics” emerged to understand the basic framework of various atomic and subatomic particles.