题目内容
(6分)下列说法正确的是 (填入正确答案标号,选对1个得3分,选对2个得4分,选对3个得6分。每错一个扣3分,最低得0分)
E.考古专家发现某一骸骨中
C的含量为活着的生物体中
C的1/4,已知
C的半衰期为5730年,则确定该生物死亡时距今越11460年
A.原子的核式结果模型是汤姆逊最早提出的 |
B.铀核![]() ![]() ![]() ![]() ![]() |
C.一个氢原子从量子数![]() |
D.一束光照射到某种金属上不能发生光电效应,可能因为光的强度太小 |
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004832133316.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004832133316.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004832133316.png)
BCE
试题分析: 卢瑟福在用a粒子轰击金箔的实验中发现了质子,提出原子核式结构学说,故A错误;根据原子核经过一次α衰变,电荷数减小2,质量数减小4,一次β衰变后电荷数增加1,质量数不变,得铀核(
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004831914432.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004831930405.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004831945374.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004832226487.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004832133316.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004832257846.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004832273303.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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