+-------------------------------------+---------+---------+--------+--------+--------+----------+ | | |Platinum-| | | | | | Metals. |Platinum.| rhodium | Gold. |Silver. | Copper.| Iron. | | | | Alloy. | | | | | +-------------------------------------+---------+---------+--------+--------+--------+----------+ | Resistance at 100° | 39.655 | 36.87 | 16.10 | 8.336 | 11.572 | 4.290 | | " 0° C | 28.851 | 31.93 | 11.58 | 5.990 | 8.117 | 2.765 | | " carbonic acid | 19.620 | .. | .. | .. | .. | .. | | " liquid oxygen | 7.662 | 22.17 | 3.380 | 1.669 | 1.589 | 0.633 | | " " nitrogen | .. | .. | .. | .. | 1.149 | .. | | " " oxygen | | | | | | | | under exhaustion| 4.634 | 20.73 | .. | .. | .. | | | " " hydrogen | 0.826 | 18.96 | 0.381 | 0.244 | 0.077 | 0.356 | | " " hydrogen | | | | | | | | under exhaustion| 0.705 | 18.90 | 0.298 | 0.226 | 0.071 | | | Resistance coefficients | 0.003745| 0.003607|0.003903|0.003917|0.004257| 0.005515 | | Vanishing temperatures (Centigrade)/| -244.50°| -543.39°|-257.90°|-252.26°|-225.62°|-258.40°C.| | \| -244.15°| -530.32°|-257.8° |-252.25°|-226.04°|-246.80°D.| +-------------------------------------+---------+---------+--------+--------+--------+----------+