当”一个”氢原子从n=4的能级向低能级跃迁可能辐射多少种不同波长的光

2025-03-01 12:40:26
推荐回答(5个)
回答1:

一个氢原子最多有三种,4-3、3-2和2-1;而一群氢原子最多有六种,4-3、4-2、4-1、3-2、3-1和2-1共六种。

6种光子中波长最长的也就是频率最小的是n=4激发态跃迁到n=3时产生的,若从n=2能级跃迁到基态释放的光子能使某金属板发生光电效应,而从n=3能级跃迁到n=2能级释放的光子频率小于n=2能级跃迁到基态释放的光子的频率;

所以不能使该板发生光电效应;使n=4能级的氢原子的能级与无穷远处的能级差为0.85eV,所以使n=4能级的氢原子电离至少要0.85eV的能量。

能级的标定 

原子核能级的性质决定于核子间的相互作用,后者主要包括强相互作用(即核力)及电磁相互作用。在一个多体系统中,粒子间的相互作用所具有的不变性能为这个多体系统提供了好的量子数。由于核力和电磁力都具有转动不变性及空间反射不变性,所以角动量I和宇称π都是原子核的好量子数(即守恒量量子数),它们是除能量以外标定能级的最基本的量子数。

以上内容参考:百度百科-能级

回答2:

一个氢原子最多有三种,4-3、3-2和2-1;
而一群氢原子最多有六种,4-3、4-2、4-1、3-2、3-1和2-1共六种。
 量子力学体系状态发生跳跃式变化的过程。原子在光的照射下从高(低)能态跳到低(高)能态发射(吸收)光子的过程就是典型的量子跃迁。即使不受光的照射,处于激发态的原子在真空零场起伏的作用下,也能跃迁到较低能态而发射光子(自发辐射)。除了辐射过程之外,其他散射过程、衰变过程等也都属于量子跃迁。量子跃迁是概率性过程,这是量子规律的根本特征。以原子能级跃迁为例,无法预言某个原子什么时刻发生跃迁,有的原子跃迁可能发生得早,有的原子跃迁可能发生得迟,因此原子处于激发态的寿命不是整齐划一的,但对大量原子来说,激发态的平均寿命是确定的,可以实验测定和理论计算。量子跃迁的速率与体系的相互作用以及跃迁前后的状态有关,并遵从一定的守恒定律。原子能级跃迁所遵从的选择定则就是角动量守恒和宇称守恒的结果。
  微观粒子量子状态的变化.包括从高能态到低能态以及从低能态到高能态.当粒子由于受热,碰撞或辐射等方式获得了相当于两个能级之差的激发能量时,他就会从能量较低的初态跃迁到能量较高的激发态,但不稳定,有自发地回到稳定状态的趋势。在释放出相应的能量后,粒子自动地回到原来的状态,这些行为称为跃迁,遵守严格的量子规则。其吸收或发射的能量都是h的整数倍。如果以光的形式表现出来,就造成光谱线 的分立性。

回答3:

最多三种,可能是一种,也可能两种。只有一个电子,这是关键!若多个电子,为六种。

回答4:

六种
从n=4跃迁有三种
跃迁到n=3时,再跃迁有两种
跃迁到n=2时,再跃迁有一种
共六种

回答5:

一个氢原子最多有三种,4-3、3-2和2-1;而一群氢原子最多有六种,4-3、4-2、4-1、3-2、3-1和2-1共六种。

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