from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun chemistry, archaic
from Wiktionary, Creative Commons Attribution/Share-Alike License
A few years ago it was believed that every element in the periodic table had been found, with the exception of the elements of atomic number 85 and 87, the hypothetical elements known as eka-iodine and eka-caesium, respectively.
Physics Department staff and of the Radiation Laboratory, aided by Dr. Segrè, Dr.J. G. Hamilton and Mr.K. R. Mackenzie, has found what appears to be clear evidence of a radioactive form of element 85, eka-iodine.