19 relations: Allotropes of oxygen, Angular momentum, Atom, Clebsch–Gordan coefficients, Diradical, Doublet state, Electron, Forbidden mechanism, Pauli matrices, Prentice Hall, Proton, Quantum mechanics, Singlet oxygen, Singlet state, Spin (physics), Spin quantum number, Spin tensor, Spin-½, Spinor.

## Allotropes of oxygen

There are several known allotropes of oxygen.

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## Angular momentum

In physics, angular momentum (rarely, moment of momentum or rotational momentum) is the rotational equivalent of linear momentum.

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## Atom

An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element.

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## Clebsch–Gordan coefficients

In physics, the Clebsch–Gordan (CG) coefficients are numbers that arise in angular momentum coupling in quantum mechanics.

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## Diradical

A diradical in organic chemistry is a molecular species with two electrons occupying two degenerate molecular orbitals (MO).

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## Doublet state

In quantum mechanics, a doublet is a mixed quantum state of a system with a spin of 1/2, such that there are two allowed values of the spin component, −1/2 and +1/2.

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## Electron

The electron is a subatomic particle, symbol or, whose electric charge is negative one elementary charge.

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## Forbidden mechanism

In spectroscopy, a forbidden mechanism (forbidden transition or forbidden line) is a spectral line associated with absorption or emission of light by atomic nuclei, atoms, or molecules which undergo a transition that is not allowed by a particular selection rule but is allowed if the approximation associated with that rule is not made.

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## Pauli matrices

In mathematical physics and mathematics, the Pauli matrices are a set of three complex matrices which are Hermitian and unitary.

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## Prentice Hall

Prentice Hall is a major educational publisher owned by Pearson plc.

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## Proton

| magnetic_moment.

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## Quantum mechanics

Quantum mechanics (QM; also known as quantum physics, quantum theory, the wave mechanical model, or matrix mechanics), including quantum field theory, is a fundamental theory in physics which describes nature at the smallest scales of energy levels of atoms and subatomic particles.

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## Singlet oxygen

Singlet oxygen, systematically named dioxygen(singlet) and dioxidene, is a gaseous inorganic chemical with the formula O.

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## Singlet state

In quantum mechanics, a singlet state usually refers to a system in which all electrons are paired.

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## Spin (physics)

In quantum mechanics and particle physics, spin is an intrinsic form of angular momentum carried by elementary particles, composite particles (hadrons), and atomic nuclei.

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## Spin quantum number

In atomic physics, the spin quantum number is a quantum number that parameterizes the intrinsic angular momentum (or spin angular momentum, or simply spin) of a given particle.

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## Spin tensor

In mathematics, mathematical physics, and theoretical physics, the spin tensor is a quantity used to describe the rotational motion of particles in spacetime.

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## Spin-½

In quantum mechanics, spin is an intrinsic property of all elementary particles.

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## Spinor

In geometry and physics, spinors are elements of a (complex) vector space that can be associated with Euclidean space.

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## Redirects here:

Spin triplet, Triple state, Triplet (physics), Triplet (spectroscopy), Triplet state (version 2).