4 n-electrons are moving in a square-box of length 2.15 Å. Assuming the validity of the particle-in-a box model, calculate the wavelength (nm) of the photon needed to excite the electrons from the HOMO to the LUMO. a. 76 b. 110 c. 89 d. 100 e. 51

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Q: Balance the following aqueous reactions: a) Se2C12 → H2SeO3 + Se + HCI

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Q: When H2(g) is mixed with CO2(g) at 1750 K, equilibrium is achieved according to the following…

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A:

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Q: how Chemical Nomenclature is different for Ionic and covalent compounds.

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Q: Which is a likely intermediate? Me The following intermediate Me Me hv 0 N-Br Me Me

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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.