Last Updated
：2025/11/20
octet rule
Noun
Japanese Meaning
化学において、原子が8つの価電子を持つために電子を失ったり、得たり、共有したりする規則。ただし、水素は最大2電子までしか保持できないため、例外とされる。
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(chemistry) A rule stating that atoms lose, gain, or share electrons in order to have a full valence shell of 8 electrons. (Hydrogen is excluded because it can hold a maximum of 2 electrons in its valence shell.)
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octet rule
Under the octet rule, atoms tend to gain, lose, or share electrons to achieve a full valence shell of eight electrons.
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Under the octet rule, atoms tend to gain, lose, or share electrons to achieve a full valence shell of eight electrons.
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