Multiple Choice
Which of the following is an ion?
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2. Atoms & Elements
Ions
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Which of the following ions has six electrons in its outermost p subshell?
A
S^{2-}
B
F^{-}
C
N^{3-}
D
O^{2-}
Verified step by step guidance1
Recall that the p subshell can hold a maximum of 6 electrons, corresponding to the three p orbitals each holding 2 electrons.
Determine the electron configuration of the neutral atom for each ion given (S, F, N, and O) by looking at their atomic numbers and filling orbitals accordingly.
For each ion, add or remove electrons based on the charge: for anions (negative charge), add electrons; for cations (positive charge), remove electrons.
Identify the number of electrons in the outermost p subshell by examining the electron configuration after accounting for the ion's charge.
Compare the ions to find which one has exactly 6 electrons in its outermost p subshell, which corresponds to a fully filled p subshell.
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