H原子3d与4s能级能量高低 为什么

2025-04-06 18:52:39
推荐回答(4个)
回答1:

原子的3d和 4s能级的能量高低为什么是3d 小于4s,如果这一个电子跃迁,它应该是先跃迁到3d轨道上呢,
氢原子的3d和 4s能级的能量高低为什么是3d 小于4s,如果这一个电子发生跃迁,它应该是先跃迁到4s然后再跃迁到3d轨道上吧,不就说明3d 大于 我这样理解对吗?请帮我分析一下,

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氢原子核外只有一个电子,其能量只与电子所在的层有关,层数据越大,其能量越高.
对氢原子来说,同一层的各个轨道能量完全一样,如:
2s 2p 能量一样
3s 3p 3d 能量一样
4s 4p 4d 4f 能量一样
电子跃迁时没有规定先跃迁到哪,后跃迁到哪;只与吸收的能量有关,能量对应电子层间的能量差.因此没有先跃迁到4s,还是先跃迁到3d说,只有对应的能量差之说.
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请采纳~

回答2:

单电子原子或离子(H、He+、Li2+等),其能级高低只于主量子数n有关【电子离核越远,能量越大】,故n越大,能量越高,电子越容易失去。(3d就是主量子数为3的d轨道)。
(仅限单电子粒子,多电子粒子还与角量子数l有关,n相同,l越大)

回答3:

和氢原子没什么关系。
具体的能级能量高低排列顺序是:(由低到高)
1s<2s<2p<3s<3p<4s<3d<4p<5s<4d<5p<6s<4f<5d<6p<7s<5f<6d<7p……

当然,在实际排列中,有时候因为电子的磁量子数和自旋量子数的原因,能级轨道的能量高低也不是绝对像上边一样的,比如说Ⅷ族元素Pd,5(d9)6(s1),6s轨道还没有排完,下一个电子就进驻5d轨道了……这些就要具体问题具体分析了。

回答4:

4s比3d高,因为没有钻穿效应和屏蔽效应

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