What new theory explained oxygen’s attraction to a magnet?

As a result of the parallel spin of unpaired electrons, molecular oxygen is paramagnetic and is attracted by a magnetic field. This is demonstrated by bringing a large test tube with a small amount of liquid oxygen close to a powerful magnet.

Which bonding theory accounts for the magnetic properties of substances?

Molecular orbital theory (MO theory) provides an explanation of chemical bonding that accounts for the paramagnetism of the oxygen molecule.

What is molecular orbital theory explain?

In molecular orbital theory, electrons in a molecule are not assigned to individual chemical bonds between atoms, but are treated as moving under the influence of the atomic nuclei in the whole molecule. … Molecular orbital theory and valence bond theory are the foundational theories of quantum chemistry.

What are paramagnetic according to molecular orbital theory?

Materials with unpaired electrons are paramagnetic and attracted to a magnetic field, while those with all-paired electrons are diamagnetic and repelled by a magnetic field.

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Can a magnet attract oxygen?

As shown in the video, molecular oxygen (O2) is paramagnetic and is attracted to the magnet. In contrast, molecular nitrogen (N2) has no unpaired electrons and is diamagnetic; it is unaffected by the magnet.

Why does a magnetic field attract paramagnetic?

Electrons that are alone in an orbital are called paramagnetic electrons. … Just as diamagnetic atoms are slightly repelled from a magnetic field, paramagnetic atoms are slightly attracted to a magnetic field. Paramagnetic properties are due to the realignment of the electron paths caused by the external magnetic field.

What is bond order O2+?

Bond order for both NO+ and NO− is 2.

What does MO theory explain that other bonding theories do not?

MO theory treats molecular bonds as a sharing of electrons between nuclei. Unlike the VB theory, which treats the electrons as localized hybrid orbitals of electron density. MO theory says that the electrons are delocalized. That means that they are spread out over the entire molecule.

What is valence bond theory and molecular orbital theory?

Valence Bond Theory: Valence bond theory is a basic theory that is used to explain the chemical bonding of atoms in a molecule. Molecular Orbital Theory: Molecular orbital theory explains the chemical bonding of a molecule using hypothetical molecular orbitals.

What is metallic bond explain it on the basis of molecular orbital theory?

Metallic bonding (metal-metal):

The valence electrons that occupy this molecular orbital, cannot be said to belong to a particular atom, but rather to the whole being, as they say, completely delocalized. … These are two: the so-called theory of the electron gas or the sea of ​​electrons and band theory.

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Which theory can explain the paramagnetic nature of O2 molecule?

Valence bond theory explains that the bonds are formed by atomic orbital and because of this, electrons are paired at the course of overlapping and so, oxygen is a diamagnetic species. But experimentally, oxygen molecules are paramagnetic in nature and this is explained by molecular orbital theory.

How does molecular orbital theory explain the paramagnetic character of oxygen?

According to molecular orbital Theory (MOT), there is 1 unpaired electron in the π2px antibonding orbital and another unpaired electron in π2py antibonding orbital. As molecules containing unpaired electrons are strongly attracted by magnetic field, hence oxygen has paramagnetic nature.

How does molecular orbital theory explain the diamagnetic character of N2?

In N2 molecule, all electrons are paired. That means half of the electrons spin clockwise and half of the electrons spin anticlockwise. Because of their opposite spins they produce magnetic field in opposite direction thus the resultant magnetism becomes zero. … This type of magnetism is called diamagnetism.

What is oxygen’s melting point?

Since molecules, as well as atoms, obey Hund’s rule, the electrons reside in separate orbitals. As a result of the parallel spin of the unpaired electrons, molecular oxygen is paramagnetic and is attracted by a magnetic field.

What gases are attracted to magnets?

Oxygen is different, it is a paramagnetic gas, which means that it is attracted by a magnetic field. There are a number of oxygen analyzers which use the unique paramagnetic properties of oxygen.