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【单选题】
短周期金属元素甲～戊在元素周期表中的相对位置如表中所示。下列判断正确的是 甲 乙 丙 丁 戊A.
金属性：甲＞丙
B.
原子半径：丙＜丁＜戊
C.
最外层电子数：甲＞乙
D.
氢氧化物的碱性：丙＞丁＞戊
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