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QUESTION

# What are the possible values of n and ml for an electron in a 5d orbital ? A) n = 5 and ml = -2, -1, 0, +1, or +2 B) n = 1, 2, 3, 4, or 5 and ml = 2 C) n = 5 and ml = 2 D) n = 1, 2, 3, 4, or 5 and ml = -2, -1, 0, +1, or +2

The principal quantum number, or n, describes the energy lelvel in which the electron can be found, Since you're interested in an electron located in a 5d-orbital, n=5.

The angular momentum quantum number, or l, describes the subshell, or orbital type, in which your electron is located. Since you have a d-orbital, l=2.

The value of l will give you the value of the magnetic quantum number, or m_l, which describes the orientation of the orbital.

The accepted values for m_l range from -l to +l, which means that you can have 5 d-orbitals in the fifth energy level, d_(xy), d_(xz), d_(yz), d_(z^2), and d_(x^2-y^2), each described by a magnetic quantum number

m_l = -2 m_l = -1 m_l = 0 m_l = +1 m_l = +2

As an example, here's how these orbitals would look for the 3d subshell