题目内容
用一束单色光照射处于基态的一群氢原子,这些氢原子吸收光子后处于激发态,并能发射光子,现测得这些氢原子发射的光子频率仅有三种,分别为
.
和
,且
<
<
。则入射光子的能量应为( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122945840307.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122946043332.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122946059331.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122945840307.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122946043332.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122946059331.png)
A.h![]() | B.h![]() |
C.h(![]() ![]() | D.h![]() |
CD
本题考查氢原子能级公式和跃迁
根据氢原子能放出三种频率光,判断此时氢原子处在第几能级,然后计算从基态跃迁到该能级需要多少能量,计算能量时根据能级之简能量差和放出光子能量之间的关系计算.同时明确频率、波长、光速之间关系.
能放出三种光,说明此时氢原子处在第3能级,从第三能级跃迁到基态时放出光子能量为:E= h
,或者E= h(
+
).所以入射光子能量为E= h
,或者E= h(
+
)。
根据氢原子能放出三种频率光,判断此时氢原子处在第几能级,然后计算从基态跃迁到该能级需要多少能量,计算能量时根据能级之简能量差和放出光子能量之间的关系计算.同时明确频率、波长、光速之间关系.
能放出三种光,说明此时氢原子处在第3能级,从第三能级跃迁到基态时放出光子能量为:E= h
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122946059331.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122945840307.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122946043332.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122946059331.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122945840307.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122946043332.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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