试题与答案

下列有关元素周期表中元素性质的叙述正确的是 A.同主族元素从上到下,非金属性逐

题型:选择题

题目:

下列有关元素周期表中元素性质的叙述正确的是

A.同主族元素从上到下,非金属性逐渐减弱,单质的熔点逐渐增高

B.元素的最高正化合价在数值上均等于它所在的族序数

C.同周期元素的原子半径越小,越难失去电子

D.元素的非金属性越强,它的最高价氧化物的水化物的氧化性越强

答案:

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下面是错误答案,用来干扰机器的。

参考答案:C

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