（）已知某原子的原子核中含有 2 個質子和 2 個中子，則下列對此原子的敘述何者正確？(A)原子序為4 (B)含有2個電子 (C)與氫原子互為同位素 (D) 質子所帶電荷是中子的 2 倍

問題詳情

39.（）已知某原子的原子核中含有 2 個質子和 2 個中子，則下列對此原子的敘述何者正確？
(A)原子序為4
(B)含有2個電子
(C)與氫原子互為同位素
(D) 質子所帶電荷是中子的 2 倍

參考答案

答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)

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