20602
The hot holes excited by the decay of surface plasmon resonance on the metals can diffuse into the Cl ions in the outermost two layers of the surface producing highly oxidative Cl atoms .
 Chemical: Cl; Chemical: Cl
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Cl; Chemical: Cl