The quantum number which determines the shape of an orbital is:

magnetic quantum number

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Azimuthal quantum number

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principal quantum number

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spin quantum number

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Solution

The correct option is B Azimuthal quantum number
Shape of the orbital is decided by Azimuthal quantum number $(l)$ .

Orbital Value of $l$ Shape

s 0 Spherical

p 1 Dumbbell

d 2 Double dumbbell

f 3 Complicated (or)
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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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