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N (Latin-gí: nitrum) ia̍h hō chò chek-sò͘/chit-sò͘ (窒素).
Kó͘-chá lâng chai-iáⁿ khong-khì tiong ū 1 ê mi̍h ē hō͘ tōng-bu̍t cha̍t-khùi, mā ē kā hoé hip hoa--khì, só͘-í āu--lâi kā hō chò "chek-sò͘" (chit-sò͘).[Bô chhut-chhù]