题目内容
如图所示为氢原子的能级结构示意图,一群氢原子处于n=3的激发态,在向较低能级跃迁的过程中向外辐射出光子,用这些光子照射逸出功为2.49eV的金属钠。下列说法正确的是
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250039162573040.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250039162573040.png)
A.这群氢原子能辐射出三种不同频率的光,其中从n=3能级跃迁到n=2能级所发出的光波长最短 |
B.这群氢原子在辐射光子的过程中电子绕核运动的动能减小, 电势能增大 |
C.能发生光电效应的光有三种 |
D.金属钠表面所发出的光电子的最大初动能是9.60eV |
D
试题分析:一群氢原子处于n=3的激发态,在向较低能级跃迁的过程中,跃迁过程有
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003916273381.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003916288422.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003916304374.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250039163191038.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250039163351057.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250039163661093.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003916273381.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003916397621.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003916413552.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003916429871.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003916273381.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250039164752265.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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