70579
The most neutron-deficient nuclei as well as those immediately beyond the shell closure at " N " " = " 184 are predicted to predominantly undergo spontaneous fission ( SF ) , whereas alpha decay ( α ) may dominate in neutron-deficient nuclei closer to the island , and significant beta decay ( β ) or electron capture ( EC ) branches may appear closest to the center of the island around Cn and Cn .
 Cn, Cn
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Cn, Cn