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Question

The quantum number that tends to specify the orientation in space for an orbital is the :
  1. Principal quantum number
  2. Spin quantum number
  3. Magnetic quantum number
  4. Orbital quantum number

A
Orbital quantum number
B
Magnetic quantum number
C
Principal quantum number
D
Spin quantum number
Solution
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Principal quantum number specifies size of the orbital, Azimuthal quantum number specifies shape of the orbital and Magnetic quantum number specifies orientation of orbital in space.

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Question 21

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

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