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Question

The m value not possible for a double dumbbell-shaped orbital is


A

0

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B

-1

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C

-2

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D

+3

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Solution

The correct option is D

+3


Explanation for correct option

(D)+3

D-orbitals

  • The shape of d-orbitals is a double dumbell.
  • Five orbitals are designated as dxy,dyz,dxz,dx2–y2,dz2

m-value for double dumbell

  • The value of the azimuthal quantum number for d-orbital is two.
  • So, the value of the magnetic quantum number is from -l to +l that is-2to+2.
  • So, the value of m for a double dumbell-shaped orbital is -2,-1,0,+1,+2.
  • Hence, the m value not possible for a double dumbbell-shaped orbital is +3.

Explanation for incorrect option

The possible value of m for double dumbbell-shaped orbital is -2,-1,0,+1,+2. Hence, options (A), (B), and (C) are incorrect.

Hence, option (D) is correct. The m value not possible for a double dumbbell-shaped orbital is +3.


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