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Chapter 8: Q18CQ (page 338)
Question: As indicated to remove one of the helium’s electrons requires of energy when orbiting ? Why or why not?
Answer
No, the Energy of orbiting electron is not .-24.6 ev
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Identify the different total angular momentum states allowed a 3d electron in a hydrogen atom.
Compare and contrast the angular momentum and magnetic moment related to orbital motion with those that are intrinsic.
To investigate the claim that lowerimplies lower f energy. consider a simple case: lithium. which has twoelectrons and alonevalence electron.
(a)First find the approximate orbit radius, in terms of. of anelectron orbiting three protons. (Refer to Section 7.8.)
(b) Assuming theelectrons shield/cancel out two of the protons in lithium's nucleus, the orbit radius of anelectron orbiting a net charge of just.
(c) Argue that lithium's valence electron should certainly have lower energy in a 25 state than in astale. (Refer Figure 7.15.)
Repeat example 8.6 but assume that the upper state is the rather than the
A lithium atom has three electrons. These occupy individual particle states corresponding to the sets of four quantum numbers given by .
Using to represent the individual-particle states when occupied by particle . Apply the Slater determinant discussed in Exercise 42 to find an expression for an antisymmetric multiparticle state. Your answer should be sums of terms like .
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