為什麼helium的atomic radius 比hydrogen 的 atomic radius 小?
回答 (1)
2006-10-24 3:18 am
✔ 最佳答案
The nucleus of helium has 2 protons while hydrogen has only 1 proton.The nuclear charge of helium is greater and has stronger attraction force to the
electron(s). Its atomic radius becomes smaller than hydrogen.
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https://hk.answers.yahoo.com/question/index?qid=20061023000051KK03177