原子物理 第六章_智慧树知到答案2021年

第六章 Structuie of the Periodic system：When many-electron atom is treated, the angular momentums of different electrons will be coupled. There are two schemes, LS coupling and JJ coupling. The microscopic particles are considered as identity. For Fermion, they should satisfy the Pauli exclusion principle. The properties of elements in periodic table are determined by their electron configurations, which are filled by the energy minimizing principle and Pauli exclusion principle. They can be summarized as Hund’s rules.6.1The couplings of angular momentum:There are many schemes about the coupling of angular momentum, which are determined by the strengths of interactions.
6.2The couplings of two electrons:Usually, there two couplings between to electrons, LS coupling and JJ coupling.
6.3Selection rules:There are different selection rules for LS coupling and JJ coupling.
6.4Pauli exclusion principle:In a quantum physics system, the two Fermion particles could not have the completely same state.
6.5The applications of Pauli exclusion principle:There many applications of Pauli exclusion principle in quantum physics.
6.6The equivalent electrons:The electrons with same main quantum number and orbital angular momentum are named as equivalent electrons.
6.7Periodic Table of Elements:The periodic table of elements is determined by the electron configuration of atom.
6.8The shell and subshell:The electrons occupy the shell and subshell of atom.
6.9Explaining the Periodic Table:The Periodic table can be explained by the quantum mechanics.
6.10The ground state of atom:The ground state of atom is determined by Hund’s rules.
6.11The energy level of carbon:The energy level of carbon is interpreted by Hund’s rules.
6.12Lande interval rule:The energy intervals with same total angular momentum is dominated by Lande interval rule.
6.13Exercise:There are several exercises about the properties of many-electrons atom.

[单选题]How many electrons can be contained in M shell (   )

选项:[20
, 2
, 18
, 8]
[单选题]What atoms have the configuration 1s²2s²2p⁶3s² (    )

选项:[Mg, Na,  Si
,  Al]
[单选题]The ground state of carbon is (   )

选项:[³P₀
,  ³P₂, ¹D₂, ³S₁
]
[单选题]The number of values allowed to total angular momentum j in Helium atom for a given non-zero l are  (   )

选项:[1
, 2
, 3
, 0 ]
[单选题]The total spin of two electrons is (   ). 

选项:[1/2
, 1
, 1 or 0, 0
]
[单选题]The 3s state of Na has an energy of -5.14 eV. Its effective nuclear charge is (  )

选项:[1e
, 5e, 11e
, 1.14 e]
[单选题]The electron configuration of Neon is  (  )

选项:[1s²2s²2p⁴
, 1s²2s²2p⁶3s
, 1s²2s²2p⁶, 1s²2s²2p⁵
]
[单选题]The maximum value of total angular momentum for electron with l=4 (   )

选项:[0, 4.5
, 4, 3.5]
[单选题]

选项:[20, 15, 10, 5]
[单选题] A system of electrons is described by a wave function should be (  )

选项:[no requirement, anti-symmetric
, symmetric
, trial
]