radio active element
回答 (4)
2010-05-04 9:15 pm
✔ 最佳答案
樓上有問題嗎如果所有東西都是放射性的，你早就死了
鑽石是碳較不穩定的異構體，所以有衰變產生
而石墨則很穩定
說回正題
化學家(正確來說，做幅射的實驗的通常是物理學家)
會穿防護衣，抵擋幅射
2010-05-05 9:25 pm
2010-05-04 9:38 pm
其實好多野都有微量輻射，但係radioactive 就即係放射性，radioactive element 即係放射性元素 e.g. hydrogen, carbon
通常都係有isotope 既 element or 人造元素 e.g. thorium, uranium
通常都係有isotope 既 element or 人造元素 e.g. thorium, uranium
2010-05-04 6:09 pm
son, everything is radio active. If you put a crystal of diamond on bench, 4000 years later only half of the diamond remain, (the slogan "diamonds are forever" is a lie!). What kind of experiment are you talking about? Do you want to know specifically radioactive experiment?
收錄日期: 2021-04-29 00:07:12
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100504000051KK00169