AP Chemistryeasymcq1 pt
A sodium atom forms Na⁺. What change in its electron configuration occurs?
A.It loses its 3s¹ electron
B.It gains one electron into 3s
C.It gains one electron into 3p
D.Its configuration is unchanged
Explanation
Core Concept
Sodium, [Ne] 3s¹, drops its single valence electron to reach the stable neon core. Metals lose valence electrons to form cations.
Correct Answer
AIt loses its 3s¹ electron
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