Which one of the quantum numbers describes shape of an orbital?

Principal quantum number

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Azimuthal quantum number

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Magnetic quantum number

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Spin quantum number

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Solution

The correct option is B Azimuthal quantum number
Principal quantum number represents the principal energy shell where the electron is revolving.

Azimuthal quantum number ( $l$ ) describes the shape of an orbital.

Magnetic quantum number describes the orientation of the orbital in space.

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Question 21

Which of the following statements concerning the quantum numbers are correct ?

(a) The angular momentum quantum number determines the three-dimensional shape of the orbital

(b) The principal quantum number determines the orientation and energy of the orbital

(d). Spin quantum number of an electron determines the orientation of the spin of electron relative to the chosen axis.

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