Matches in DBpedia 2016-04 for { ?s ?p "Molecular hydrogen occurs in two isomeric forms, one with its two proton spins aligned parallel (orthohydrogen), the other with its two proton spins aligned antiparallel (parahydrogen).Parahydrogen is in a lower energy state than is orthohydrogen. At room temperature and thermal equilibrium, thermal excitation causes hydrogen to consist of approximately 75% orthohydrogen and 25% parahydrogen. After hydrogen is liquified, there is a slow spontaneous transition to a predominantly para ratio, with the released energy having implications for storage."@en }
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- Spin_isomers_of_hydrogen abstract "Molecular hydrogen occurs in two isomeric forms, one with its two proton spins aligned parallel (orthohydrogen), the other with its two proton spins aligned antiparallel (parahydrogen).Parahydrogen is in a lower energy state than is orthohydrogen. At room temperature and thermal equilibrium, thermal excitation causes hydrogen to consist of approximately 75% orthohydrogen and 25% parahydrogen. After hydrogen is liquified, there is a slow spontaneous transition to a predominantly para ratio, with the released energy having implications for storage.".
- Q385696 abstract "Molecular hydrogen occurs in two isomeric forms, one with its two proton spins aligned parallel (orthohydrogen), the other with its two proton spins aligned antiparallel (parahydrogen).Parahydrogen is in a lower energy state than is orthohydrogen. At room temperature and thermal equilibrium, thermal excitation causes hydrogen to consist of approximately 75% orthohydrogen and 25% parahydrogen. After hydrogen is liquified, there is a slow spontaneous transition to a predominantly para ratio, with the released energy having implications for storage.".