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What Is A Quantum Number

What Is A Quantum Number

A quantum number is a value that is used when describing the energy levels available to atoms and molecules.

It defines the exact position of electron in atom.

photo owner: Universiteit Leiden

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Spin Quantum Numbers (ms)

Spin Quantum Numbers (ms)

describe the angular momentum of an electron. An electron spins around an axis and has both angular momentum and orbital angular momentum. Because angular momentum is a vector, the Spin Quantum Number (s) has both a magnitude (½) and direction (+ or -)

(+½) ===> in the dire...

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Azimuthal Quantum Numbers (ℓ)

Azimuthal Quantum Numbers (ℓ)

The azimuthal quantum number is a quantum number for an atomic orbital that determines its orbital angular momentum and describes the shape of the orbital.

Every azimuthal number has his own capacity of electrons

  • S(v=0) ==> 1 orb ==> 2 electrons
  • ...

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Practice

Practice

We have to define the exact place of the last electron for the element Neon¹⁰

  1. We have to configure the electrons 1s²,2s²,2p⁶
  2. Now we focus on the last number 2p⁶

• n (the number before the letter) =...

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Quantum Numbers

Quantum Numbers

There is four quantum numbers that are used to describe completely the movement and trajectories of each electron within an atom.

  1. Principal
  2. Azimuthal

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Principal Quantum Numbers (n)

Principal Quantum Numbers (n)

describe the energy of an electron and the most probable distance of the electron from the nucleus.

To know the maximum amount of electron that an energy level can handle, Use this formula 2n² (does not include O , P , Q).

photo owner: All About ...

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Magnetic quantum Numbers (mℓ)

Magnetic quantum Numbers (mℓ)

Specifie the orientation in space of an orbital of a given energy (n) and shape (l). This number divides the subshell into individual orbitals which hold the electrons; there are 2l+1 orbitals in each subshell.

Every orbital capacity is 2 electrons

Magnetic ...

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ziadmohsen

Highschool Student who has passionate interest in different sciences and World history.

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Azimuthal Quantum Numbers (ℓ)

Azimuthal Quantum Numbers (ℓ)

The azimuthal quantum number is a quantum number for an atomic orbital that determines its orbital angular momentum and describes the shape of the orbital.

Every azimuthal number has his own capacity of electrons

  • S(v=0) ==> 1 orb ==> 2 electrons
  • ...

Spin Quantum Numbers (ms)

Spin Quantum Numbers (ms)

describe the angular momentum of an electron. An electron spins around an axis and has both angular momentum and orbital angular momentum. Because angular momentum is a vector, the Spin Quantum Number (s) has both a magnitude (½) and direction (+ or -)

(+½) ===> in the dire...

Magnetic quantum Numbers (mℓ)

Magnetic quantum Numbers (mℓ)

Specifie the orientation in space of an orbital of a given energy (n) and shape (l). This number divides the subshell into individual orbitals which hold the electrons; there are 2l+1 orbitals in each subshell.

Every orbital capacity is 2 electrons

Magnetic ...

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