10 Questions
What type of compounds are σ electrons usually present in?
Saturated compounds
What is the difference between σ electrons and π electrons?
σ electrons are involved in the formation of σ bonds, while π electrons are involved in the formation of π bonds
What type of molecular orbital (MO) do π electrons occupy?
π MO
What is the energy order of the electronic transitions associated with σ and π orbitals?
σ > σ* > π > π*
What type of radiation is associated with the transition from n to π*?
Near UV and Visible (200 to 800 nm)
What is the type of transition that occurs when an electron in the bonding σ orbital is excited to the corresponding anti-bonding σ* orbital?
σ to σ* transition
What is the energy range associated with the transition from n to σ*?
Vacuum UV (10 to 200 nm)
What is the difference between σ and σ* molecular orbitals?
σ is a bonding orbital, while σ* is an anti-bonding orbital
What is the relationship between the energy of electronic transitions and the type of molecular orbitals involved?
The energy of electronic transitions increases as the type of molecular orbitals involved changes from bonding to anti-bonding
What is the significance of the energy order of electronic transitions in spectroscopy?
It determines the type of radiation absorbed by a molecule
Learn about the polar bonds in water molecules, why oxygen has a partial negative charge and hydrogen has a partial positive charge, and how this leads to an electric field. Understand the concept of electronegativity and dipole moment.
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