Chapter 8- Electron Configuration and Chemical Periodicity...

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Chapter 21 / Exercise 21.15
Organic Chemistry
Brown
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Chapter 8: Electron Configuration and Chemical Periodicity1.“Each electron in an atom must have its own unique set of quantum numbers” is a statement ofA)the aufbau principle.D)the periodic law.B)the Pauli exclusion principle.E)Heisenberg's principle.C)Hund's rule.Ans: B
Difficulty: E2.Energy states of atoms containing more than one electron arise from nucleus-electron and electron-electron interactions. Which of the following statements correctly describesthese effects?
Difficulty: E3.Which one of the following statements about orbital energies is incorrect?
.
.
Difficulty: E4.The effective nuclear charge for an atom is less than the actual nuclear charge due to
Difficulty: MPage 114
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Organic Chemistry
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Chapter 21 / Exercise 21.15
Organic Chemistry
Brown
Expert Verified
Chapter 8: Electron Configuration and Chemical Periodicity5.In many-electron atoms, which quantum numbers specify the energy of an electron?A) nand lB) nand mlC) land mlD) nand msE) n, lAns: A
, and ml
Difficulty: E6.Which of the following sublevels is filled last? 3
5s
Difficulty: M7.“Electrons added to atomic orbitals of the same energy will remain unpaired with parallel spins until the subshell is more than half-filled” is a statement of
Difficulty: E8.Which one of the following statements about atomic structure and quantum numbers is incorrect?
E)The following set of quantum numbers for a single orbital is not allowed: n= 3,= 1, ml= –2.l
Difficulty: M

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