AP Chemistrymediummcq1 pt
How many valence electrons are in the nitrate ion, NO₃⁻?
A.24
B.23
C.25
D.18
Explanation
Core Concept
Count valence electrons: N has 5, each O has 6 (18 total), and the 1− charge adds 1, giving 5 + 18 + 1 = 24. Ions add (anion) or subtract (cation) charge from the valence tally.
Correct Answer
A24
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