试题与答案

下列说法中正确的是( ) ①质子数相同的微粒一定属于同一种元素 ②电子数相同的微

题型:选择题

题目:

下列说法中正确的是(  )

①质子数相同的微粒一定属于同一种元素

②电子数相同的微粒不一定是同一种元素

③两个原子如果核外电子排布相同,一定是同一种元素

④质子数相同,电子数也相同的两种微粒,不可能是一种分子和一种离子

⑤所含质子数和电子数相等的微粒一定是原子

⑥同种元素的原子其质量数必相等.

A.①②④

B.②③④

C.③④⑥

D.①⑤⑥

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B

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