Chemistry. An atom or molecule whose equivalence is seven atoms of hydrogen, i.e. which can be combined with, substituted for, or replaced by…
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| 单词 | θ67472 |
| 释义 | the world > matter > chemistry > valency > [noun] > combining powers of elements > element with the power of seven (1) heptad- Chemistry. An atom or molecule whose equivalence is seven atoms of hydrogen, i.e. which can be combined with, substituted for, or replaced by… |
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