the outer shell (shell, n. 19b) of an atom, incompleteness of which is responsible for its valency.
| 单词 | θ67464 |
| 释义 | the world > matter > chemistry > valency > [noun] > valence shell (1) valence shell1923 the outer shell (shell, n. 19b) of an atom, incompleteness of which is responsible for its valency. |
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