Molecular Orbital Theory and Molecular Orbitals of H2

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What occurs when two atomic orbitals combine in phase to form a molecular orbital?

Molecular orbital energy decreases

Destructive interference

No interference

Constructive interference (correct)

What is the shape of the molecular orbital formed by the overlap of two 2px atomic orbitals?

φ (phi) molecular orbital

σ (sigma) molecular orbital

π (pi) molecular orbital (correct)

δ (delta) molecular orbital

In a molecular orbital energy diagram, which molecular orbital has the highest energy in a > 14 electron system?

π*2py

σ*2pz (correct)

σ*2s

π*2px

What is the term used to describe molecular orbitals that have the same sign of the wave function when moving equal distances in opposite directions from the center of the MO?

Gerade Signup and view all the answers

What type of interference occurs when two atomic orbitals combine out of phase to form a molecular orbital?

Destructive interference Signup and view all the answers

What is the shape of the molecular orbital formed by the overlap of two 1s atomic orbitals?

σ (sigma) molecular orbital Signup and view all the answers

What is the result of combining two atomic orbitals in the same phase?

Constructive interference Signup and view all the answers

What is the characteristic of antibonding molecular orbitals in terms of energy?

Higher in energy than atomic orbitals Signup and view all the answers

What is the shape of molecular orbitals formed by s-orbitals?

Symmetrical around the bond axis Signup and view all the answers

What is the effect of destructive interference on electron density in the internuclear region?

Electron density decreases Signup and view all the answers

What is the difference between 𝞂 and 𝛑 molecular orbitals?

𝞂 is symmetrical, 𝛑 is asymmetrical Signup and view all the answers

What is the equation for forming a bonding molecular orbital?

𝛹BMO = 𝛹A + 𝛹B Signup and view all the answers

What is the primary reason for the need of resonance theory in molecular structure representation?

To account for the delocalization of π electrons in certain molecules Signup and view all the answers

What is a characteristic of resonance hybrid structures?

They have bond lengths that are intermediate to those of the resonance structures Signup and view all the answers

What is a condition for resonance to occur in a molecule?

The molecule must have a planar structure Signup and view all the answers

What is the role of the most stable resonance structure in contributing to the resonance hybrid?

It contributes maximum towards the resonance hybrid Signup and view all the answers

What is true about the energy of resonance structures and the resonance hybrid?

The resonance structures have similar or degenerate energy Signup and view all the answers

What is the relationship between the bonding and nonbonding electron pairs in a resonance hybrid?

The number of bonding and nonbonding electron pairs are equal Signup and view all the answers

Molecular Orbital Theory and Molecular Orbitals of H2

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