ortho-hydrogen

noun

¦ȯ(r)thə+
: molecular hydrogen in which the two hydrogen nuclei are spinning in the same direction
ordinary hydrogen gas comprises an equilibrium mixture of three parts of ortho-hydrogen (with parallel nuclear spin) to one part of para-hydrogen (with antiparallel nuclear spin)Otto Reinmuth
compare para-hydrogen

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Cite this Entry

“Ortho-hydrogen.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ortho-hydrogen. Accessed 25 May. 2024.

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