Last Updated
：2025/11/21
argon-40
Noun
uncountable
Japanese Meaning
アルゴンの主要な安定同位体。18個の陽子と22個の中性子からなり、自然界に存在するアルゴンの約99.6%を占める。
Quizzes for review
(physics) The major stable isotope of argon, ⁴⁰₁₈Ar, having eighteen protons and twenty-two neutrons; it amounts to about 99.6% of the element in nature
音声機能が動作しない場合はこちらをご確認ください
See correct answer
argon-40
Geologists measured the argon-40 content in the volcanic rock to estimate its eruption age.
See correct answer
Geologists measured the argon-40 content in the volcanic rock to estimate its eruption age.
音声機能が動作しない場合はこちらをご確認ください
English - English
Word Edit Setting
- Users who have edit permission for words - All Users
- Screen new word creation
- Screen word edits
- Screen word deletion
- Screen the creation of new headword that may be duplicates
- Screen changing entry name
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
Sentence Edit Setting
- Users who have edit permission for sentences - All Users
- Screen sentence deletion
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
Quiz Edit Setting
- Users who have edit permission for quizzes - All Users
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
