bei48482_FM
Many-Electron Atoms 247 than do 3delectrons. Hence the 4ssubshell is filled first in potassium and calcium. As the 3dsubshell is ...
248 Chapter Seven The potential energy Umof a magnetic dipole of moment in a magnetic field B is, as we know, UmBcos (6.38 ...
Many-Electron Atoms 249 The orbiting electron “sees” itself circled ftimes per second by the proton of charge ethat is the nucl ...
250 Chapter Seven table—hydrogen, lithium, sodium, and so on—are of this kind. They have single electrons outside closed inner s ...
Many-Electron Atoms 251 J = j (j + 1)^3 h = 2 h Jz J = j (j + 1) (^3) 2 (^1) 2 -^1 2 -^3 2 (^3) 2 mj= mj= –^1 2 (^1) 2 mj ...
252 Chapter Seven the various electrons are coupled together into a single resultant L. The spin angular mo- menta Siare also co ...
Many-Electron Atoms 253 Example 7.5 Find the possible values of the total angular-momentum quantum number Junder LScoupling of t ...
254 Chapter Seven A superscript number before the letter (^2 P, for instance) is used to indicate the multiplicityof the state, ...
Many-Electron Atoms 255 The transitions of the outer electrons of an atom usually involve only a few electronvolts of energy, an ...
Henry G. J. Moseley(1887–1915) was born in Weymouth, on Eng- land’s south coast. He studied physics at Oxford, where his father ...
Many-Electron Atoms 257 periodic table could be established. The ordering of the elements by atomic number (which is what matter ...
258 Chapter Seven Figure 7.21When an electron from an outer shell of an atom with a missing inner electron drops to fill the vac ...
Atomic Spectra 259 Appendix to Chapter 7 Atomic Spectra W e are now in a position to understand the chief features of the spectr ...
260 Appendix to Chapter 7 for allowed transitions here is Selection rule l 1 which is illustrated by the transitions shown. ...
Atomic Spectra 261 When only a single electron is involved, L0 is prohibited and Ll 1 is the only possibility. Furthermor ...
Helium atoms in singlet states (antiparallel spins) constitute paraheliumand those in triplet states (parallel spins) constitute ...
Atomic Spectra 263 Mercury The last energy-level diagram we consider is that of mercury, which has two electrons outside an inne ...
264 Chapter 7 7.1 Electron Spin A beam of electrons enters a uniform 1.20-T magnetic field. (a) Find the energy difference betw ...
Exercises 265 7.7 Spin-Orbit Coupling Why is the ground state of the hydrogen atom not split into two sublevels by spin-orbit c ...
266 CHAPTER 8 Molecules 8.1 THE MOLECULAR BOND Electric forces hold atoms together to form molecules 8.2 ELECTRON SHARING The me ...
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