—Miss Broun is very busy, isn’t she? —So she is.She has greater responsibilities since she was promoted. A.taken off B.taken after C.taken in D.taken on 答案:D下面是钠元素和氯元素在元素周期表中的信息和3种粒子的结构示意图.请回答下列问题:(1)氯原子的核电荷数是 ;钠原子与氯原子的最本质区别是 .(2)在钠和氯气生成氯化钠的反应中,得到电子的是 原子;Na+的结构示意图是 (填字母).