本题目来源于试卷: Models of Matter A.3 Electron Configurations，类别为 IB化学
[单选题]
Which of the following is the correct electron configuration of a typical sodium ion?
A. [Ne] $3s^1$
B. [Ne] $3s^2$
C. [Ne]
D. [Ne] $2s^1$
参考答案: C
本题详细解析:
The atomic number of sodium is 11. The atom loses one electron to become a stable ion with a charge of 1+ (10 electrons).Choice A is incorrect because it shows the electron configuration of a sodium atom, not sodium ion. Choice B is incorrect because it shows an increase instead of a decrease by 1 electron.Choice D is incorrect because of $2s^1$
.Choice C is the correct answer. Ne has an atomic number 10. In a neutral atom, the number of electrons is equal to the number of protons. Therefore, Ne has 10 electrons in its atom. Sodium ion has 10 electrons too.
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