Although the Periodic Table Is Organized According to the Atomic

question 85

Multiple Choice

Although the periodic table is organized according to the atomic numbers of the elements, chemists are more interested in the arrangement of the electrons for their studies. Which of the following statements about the electron configurations and their quantum numbers is correct?

• A) The size of an atom is associated with the angular momentum quantum number.
• B) The valence electrons of atoms in a particular group have the same principal and angular momentum quantum numbers.
• C) The valence electrons of atoms in a particular group have the same angular momentum quantum number but have different principal quantum numbers.
• D) Quantum numbers for the electrons tell us little about the relative energies of the electrons.
• E) None of the above statements is correct.

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