短周期主族元素A、B、C、D，原子序数依次增大。A、C同主族

更新 2022-09-03
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短周期主族元素A、B、C、D，原子序数依次增大。A、C同主族，A、B、C三种元素原子的最外层电子数之和为15，B原子最外层电子数等于A原子最外层电子数的一半。下列叙述正确的是（   ）
A．最高价氧化物对应水化物的酸性：D＜C       B．非金属性：A＞C
C．原子半径：A＜B＜C＜D　                   D．单质B常温下能溶于浓硝酸

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