最終更新日：2024/08/02

(dated) A chemical element, supposed to be the then-undiscovered technetium, but later identified as rhenium.

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nipponium

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nipponium

noun

(dated) A chemical element, supposed to be the then-undiscovered technetium, but later identified as rhenium.

Nipponium is a chemical element that was discovered in 1904.

意味（1）

(dated) A chemical element, supposed to be the then-undiscovered technetium, but later identified as rhenium.

Element between molybdenum and ruthenium (perhaps Ogawa's nipponium)