X元素的阳离子与Y的阴离子具有相同的核外电子排布,则下列比较中正确的是 A.原子 发布时间:2017-06-09 05:48 │ 来源:www.tikuol.com 题型:选择题 问题: X元素的阳离子与Y的阴离子具有相同的核外电子排布,则下列比较中正确的是 A.原子序数: X< YB.原子半径:X< YC.离子半径:X> YD.最外层电子数:X< Y
题型:选择题 In the meeting, the professor expressed his thanks for the aid he _________ from his students.A.receivedB.was receivedC.have receivedD.had received 查看答案