32573
Arsenic reacts with metals to form arsenides , though these are not ionic compounds containing the As ion as the formation of such an anion would be highly endothermic and even the group 1 arsenides have properties of intermetallic compounds .
 As
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 As