| 释义 |
non-ˈvalent, a. Chem.
[f. non- + -valent.]
a. Not capable of entering into chemical combination; inert.
1908Athenæum 28 Mar. 390/1 All the ‘non-valent’ elements—I should prefer to describe them as the elements which are inert at atmospheric pressure and temperature—should sublime.
b. Having a formal oxidation state of zero.
1950N. V. Sidgwick Chem. Elements & their Compounds II. 1429 Nickel is of course non-valent in the carbonyl Ni(CO)4. 1962P. J. & B. Durrant Introd. Adv. Inorg. Chem. xxiv. 981 None of the elements [of sub-Group VI T] forms any compounds in which it is non-valent. |