在下列电子结构中，第一电离能最小的元素的原子结构可能是（

在下列电子结构中，第一电离能最小的元素的原子结构可能是（）。

A．2s²2p³ B．2s²2p⁴ C．2s²2p⁵ D．2s²2p⁶

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在下列电子结构中，第一电离能最小的元素的原子结构可能是（

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