[Campbell Biology P.84] While early models visualized electron shells as concentric paths, ... | Practice Question
While early models visualized electron shells as concentric paths, modern understanding describes them as composed of three-dimensional 'orbitals.' Which of the following statements correctly differentiates between these concepts or applies orbital rules?
A: A concentric circle diagram accurately depicts the exact location of electrons, whereas an orbital defines where an electron is found 100% of the time.
B: The second electron shell can hold up to 8 electrons because it consists of four orbitals, each capable of accommodating a maximum of 2 electrons.
C: An electron shell is a specific volume of space where electrons are most likely to be found, while an orbital is a two-dimensional path.
D: All electrons within the same electron shell have identical energy levels and occupy the same volume of space.
Explanation
The text states: 'The second shell holds a maximum of 8 electrons.' and later, 'The four orbitals of the second electron shell can hold up to 8 electrons, 2 in each orbital.' This directly supports option B.