Molecular Orbital Theory Quiz

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What does it imply if a molecule has at least one unpaired electron?

The molecule is colorless.
The molecule is paramagnetic. (correct)
The molecule is diamagnetic.
The molecule is a poor conductor of electricity.

Why does the oxygen molecule exhibit paramagnetic behavior despite being generally termed diamagnetic?

It has an even number of total electrons.
It has a complete electron pairing.
It contains unpaired electrons. (correct)
It follows the valence bond theory.

What characteristic do diamagnetic molecules typically have?

They are completely filled with electrons. (correct)
They show color properties.
They have stronger magnetic properties than paramagnetic molecules.
They contain unpaired electrons.

Which statement is accurate regarding the color property of molecules?

<p>Paramagnetic molecules exhibit color due to unpaired electrons. (A)</p> Signup and view all the answers

Which of the following statements about molecular orbital theory (M.O.T) is true?

<p>Diamagnetic molecules always contain paired electrons. (A)</p> Signup and view all the answers

Flashcards

Molecular Orbital Theory (M.O.T)

A theory used to explain the bonding in molecules using the concept of molecular orbitals formed by the combination of atomic orbitals.

Paramagnetic

A molecule that has at least one unpaired electron. It is attracted to a magnetic field.

Diamagnetic

A molecule that has all its electrons paired. It is repelled by a magnetic field.

Oxygen molecule's magnetic behavior

Oxygen molecule is diamagnetic according to the valence bond theory, but it is actually paramagnetic. This is due to the presence of two unpaired electrons in its molecular orbitals.

Signup and view all the flashcards

Color and unpaired electrons

The presence of unpaired electrons in a molecule often results in the molecule absorbing light in the visible range, causing it to appear colored.

Signup and view all the flashcards

Study Notes

Molecular Orbital Theory (MOT)

Oxygen molecule is diamagnetic but practically paramagnetic.
Valence bond theory cannot explain this behaviour.
A molecule with at least one unpaired electron is paramagnetic.
Molecules with completely filled orbitals are diamagnetic and colourless.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

Explore the intriguing concepts of Molecular Orbital Theory (MOT) in this quiz. Learn about the magnetic properties of molecules, including the behavior of the oxygen molecule and how valence bond theory falls short in its explanation. Test your understanding of diamagnetism and paramagnetism, and discover the significance of unpaired electrons in molecular structures.