astatine
中文解釋
wordnet sense
Collocation Usage
Collins Definition
Noun
The chemical element of atomic number 85, a radioactive member of the halogen group. Astatine was first produced by bombarding bismuth with alpha particles, and it occurs in traces in nature as a decay product,
/ˈastəˌtēn/,/-tin/,
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The chemical element of atomic number 85, a radioactive member of the halogen group. Astatine was first produced by bombarding bismuth with alpha particles, and it occurs in traces in nature as a decay product,
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The chemical element of atomic number 85, a radioactive member of the halogen group. Astatine was first produced by bombarding bismuth with alpha particles, and it occurs in traces in nature as a decay product
Web Definitions:
- a highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium
- Astatine (or) is a radioactive chemical element with the symbol At and atomic number 85. It is the second-heaviest of the discovered halogens. Although astatine is produced by radioactive decay in nature, due to its short half life it is found only in minute amounts. ...