题目
已知X+、Y2+、Z﹣、W2﹣四种离子具有相同的电子层结构．下列关于X、Y、Z、W四种元素的描述，不正确的是（ ） A．原子半径：X＞Y＞W＞Z B．金属性：X＞Y，还原性：Z﹣＞W2﹣ C．离子半径：Y2+＜X+＜Z﹣＜W2﹣ D．原子序数：Y＞X＞Z＞W
答案：B
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