Molecular Orbitals and Bonding

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What is the main purpose of using computational chemistry in pharmaceutical research?

To understand the distribution of electrons

To predict molecular structures

To identify specific disease targets (correct)

To study atomic orbitals

How are potential drug candidates narrowed down in pharmaceutical research?

By testing the drugs on animals

By studying atomic structures

By carefully testing for side effects and effectiveness (correct)

By focusing on electron distribution

In a molecular orbital diagram for a diatomic molecule, the dashed lines represent:

Antibonding orbitals

Degenerate orbitals

Bonding orbitals

The combination of atomic orbitals (correct)

How are electrons distributed in molecular orbitals according to the Aufbau principle?

Electrons spread out among degenerate orbitals before pairing Signup and view all the answers

Which statement best describes the molecular electron configuration for a diatomic molecule with 8 valence electrons?

(σ1s)2(σ∗1s)2(σ2s)2(σ∗2s)1(π2p)4 Signup and view all the answers

What type of molecular orbitals result from combining atomic orbitals?

Bonding and antibonding orbitals Signup and view all the answers

What is the role of computational chemists in predicting drug structures?

To predict how structures fit together and bind effectively Signup and view all the answers

How do scientists inhibit the progress of diseases like HIV-1 with pharmaceutical research?

By designing molecules that bind to specific proteins Signup and view all the answers

What happens when one pair of atomic orbitals combine in a molecular orbital diagram?

One antibonding orbital forms Signup and view all the answers

Which principle governs the filling of molecular orbitals in the same way as atomic orbitals?

Aufbau principle Signup and view all the answers

How are low-energy molecular orbitals filled compared to high-energy orbitals?

Electrons spread out among low-energy orbitals before pairing Signup and view all the answers

What is the maximum number of electrons that can be accommodated in each molecular orbital?

2 electrons Signup and view all the answers

Why is it common to omit core electrons from molecular orbital diagrams and configurations?

Core electrons do not participate in bonding Signup and view all the answers

In a diatomic molecule with 10 valence electrons, what would be its molecular electron configuration?

(σ1s)2(σ∗1s)2(σ2s)2(σ∗2s)2 Signup and view all the answers

What happens when three pairs of atomic orbitals combine in a molecular orbital diagram?

Six bonding orbitals and six antibonding orbitals result Signup and view all the answers

Which type of molecular orbital diagram represents a diatomic molecule's atomic orbitals on the left and right?

(σ-σ*) diagram Signup and view all the answers

What does each horizontal line in a molecular orbital diagram represent?

Two electrons in an orbital Signup and view all the answers

Which principle guides the distribution of electrons in degenerate molecular orbitals?

'Hund's rule' Signup and view all the answers

Molecular Orbitals and Bonding

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