题目内容（请给出正确答案）

[主观题]

Four quantum numbers characterize an electron as to its size, shape, and spatial orientation. The nu

mber ofenergy states for each orbital is determined by ______.

A) The principal quantum number

B) The second quantum number

C) The third quantum number

D) The fourth quantum number

提问人：网友anonymity 发布时间：2022-01-06

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