Question

When an atom is placed in a magnetic field, the possible number of orientations for an orbital of azimuthal quantum number $3$ is:

• A. Three
• B. One
• C. Five
• D. Seven

Answer 1

Answer: (D)

Seven

$\to$Azimuthal quantum number of f-orbital is 3.

$\to$The orientation of an orbital in space in the presence

of magnetic field is represented by magnetic quantum number(m)

For f orbital,the values of m are$-3,-2,-1,0,1,2,3$

that is $7$ possible orientation for f-orbital