CHEM 1A Chapter Notes - Chapter 1: Magnetic Quantum Number, Wave Function

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17 Oct 2018

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3 quantum numbers used to label; each wavefunction: n: related to size and energy of the orbital, l: related to shape, ml: related to orientation in space. *in a one-electron atom, all atomic orbitals with the same value of n have the same energy and are said to belong to the same shell of the atom. Orbital angular momentum quantum number l l = (cid:1004), (cid:1005), (cid:1006), , n-1: there are n different values of l for a given value of n, ex. If n=3, l can be 0, 1, or 2. As l increases, orbital angular momentum (rate at which the electron circulates the nucleus) also increases: electrons in s-orbitals have 0 orbital angular momentum (bc l=0) Degenerate: orbitals of a shell in a hydrogen atom all have the same energy: degeneracy is only true for only hydrogen atoms and one-electron ions. Ml = l, l-(cid:1005), (cid:1004), , -l.

Related Questions

1.Which of the following is not a valid set of quantum numbers?

	n = 1, l = 0, ml = 0, ms = +1/2
	n = 3, l = 1, ml = -1, ms = -1/2
	n = 9, l = 4, ml = -3, ms = +1/2
	n = 6, l = 5, ml = 4, ms = -1/2
	n = 3, l = 3, ml = -2, ms = +1/2

2. Type the chemical symbol for the ION with a +2 charge whose ground state electron configuration has eight electrons in the 3d orbital.

3.All of the orbitals in a given subshell have the same value of the __________ quantum number.

	a. principal
	b. azimuthal (angular momentum)
c.	magnetic
d.	principal and azimuthal (angular momentum)
e.	azimuthal (angular momentum) and magnetic

4. Calculate the frequency of light, in Hz, that has a wavelength of (1.93x10^3) cm.

5. What is the maximum number of electrons that can occupy the orbitals represented by n = 5, l = 1?

Which of the following statements is/are correct?

1.) The angular momentum quantum number, l, of an electron in an s orbital is always equal to 0.

2.) The magnetic quantum number, m, of an electron in a p orbital is +1,0, or -1.

3.) The principle quantum, n, of an electron in a d orbital must be equal to or greater than 3.

CHEM 1A Chapter Notes - Chapter 1: Magnetic Quantum Number, Wave Function

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