platinic, a. Chem.
(pləˈtɪnɪk)
[f. platin-um + -ic. So F. platinique.]
Applied to those compounds of platinum in which it exists in its higher degree of valency, i.e. as a tetrad; as platinic oxide, PtO2; platinic chloride, PtCl4. Opposed to platinous. (Cf. ferric, and see -ic 1 b.)
| 1842 Parnell Chem. Anal. (1845) 95 The conversion of the platinous oxide compounds into the platinic oxide. 1866 Watts Dict. Chem. IV. 665 Platinum forms two series of compounds, the platinous compounds in which it is diatomic, e.g. PtCl2, PtO, etc., and the platinic compounds in which it is tetratomic, e.g. PtCl4, PtO2, etc. Ibid. 668 Tetrachloride of Platinum or Platinic Chloride, PtivCl4. |