SAT II Chemistry : Electrons and Quantum Theory

Study concepts, example questions & explanations for SAT II Chemistry

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Example Questions

Example Question #1 : Electron Configuration

Which of the following has the electron configuration of ?

Possible Answers:

Correct answer:

Explanation:

The task is to find the atom or ion with its first three energy levels completely filled. Argon is not an answer choice, which means that it must be one of the ions with an atomic number close to argon's atomic number. Recalling that a positive charge means electrons were lost from the outermost shell and that a negative charge means electrons were gained in the outermost shell, the only answer that works is .

Example Question #1 : Elements And Atoms

Which of the following variables identifies the sublevel that has three orbitals?

Possible Answers:

Correct answer:

Explanation:

The  sublevel contains three orbitals, whereas the other levels listed contain different numbers of orbitals. The  level has one orbital; the  level has five; the  level has seven; and there is no  sublevel.

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