Chemistry

posted by .

The principal quantum number, n, describes the energy level of a particular orbital as a function of the distance from the center of the nucleus. Additional quantum numbers exist to quantify the other characteristics of the electron. The angular momentum quantum number (§¤), the magnetic quantum number (m§¤), and the spin quantum number (ms) have strict rules which govern the possible values. Identify allowable combinations of quantum numbers for an electron. Select all that apply.

n=3 l=-1 ml=0 ms=+1/2
n=4 l=2 ml=3 ms=-1/2
n=3 l=0 ml=0 ms=+1/2
n=2 l=1 ml=0 ms=-1
n=4 l=4 ml=0 ms=+1/2
n=5 l=1 ml=1 ms=-1/2

  • Chemistry -

    Here are the rules.
    n can be any whole number over zero; i.e., 1, 2, 3, 4, etc.

    l ("ell") can be any whole number beginning with zero, 1, 2, 3, etc with a maximum of n-1.

    ml = - ell to + ell in whole numbers;i.e., if ell is 2 then ml can be -2,-1,0,+1,+2.

    ms may have two values only; i.e., +1/2 or -1/2
    Your job is to take these rules and apply them to each of the above and find those that are allowed. To give you a fast start
    #1 is allowed.
    #2 is not allowed. Why not? If N is 4, then l CAN be 2 (l can have values in this case of 0,1,2,3) so 2 is allowed. However, ml CANNOT be 3 because ml may take values from -l to +l (in whole numbers) which will allow -2,-1,0,+1,and +2 but not +3.

  • Chemistry -

    4 and 5

  • Chemistry -

    hjgtgy

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    which quantum number, or quantum numbers, can be connected with the direction a particular orbital position points in space, regarding wave mechanics?
  2. chemistry

    Which of the following quantum numbers describes the shape of an orbital?
  3. chemistry

    Suppose you take a trip to a distant universe and find that the periodic table there is derived from an arrangement of quantum numbers different from the one on Earth. The rules in that universe are: 1. principal quantum number n = …
  4. Chemistry

    The energy (in joules) of an electron energy level in the Bohr atom is given by the expression: En = -2.179 x 10-18/n2 J where n is the principal quantum number for the energy level. What is the frequency in Hz of the electromagnetic …
  5. Chemistry

    The principal quantum number, n, describes the energy level of a particular orbital as a function of the distance from the center of the nucleus. Additional quantum numbers exist to quantify the other characteristics of the electron. …
  6. chemistry

    A 5d electron emits a photon, what are the possible quantum n,l, quantum numbers of the final s tate electron?
  7. chemistry

    Which statement describes the principal quantum number (n)?
  8. Physics

    Consider the Bohr energy expression (Equation 30.13) as it applies to singly ionized helium He+ (Z = 2) and an ionized atom with Z=4 and only a single electron orbiting the nucleus. This expression predicts equal electron energies …
  9. chemistry

    Quantum numbers arise naturally from the mathematics used to describe the possible states of an electron in an atom. The four quantum numbers, the principal quantum number (n), the angular momentum quantum number (ℓ), the magnetic …
  10. Chemistry

    An electron is in the 5f orbital. What are the values or sets of values for… a. The principle quantum number (n)?

More Similar Questions