A:半径:Y2﹣>Z﹣>X+>W3+
B:还原性:Y2﹣>Z﹣
C:氧化性:W3+>X+
D:质子数:c>d>b>a
通常说“铁比木头重”,下面理解错误的是( )
— you sing an English song?
—Yes ,I can .