7828
Threshold collision - induced dissociation of hydrated magnesium : experimental and theoretical investigation of the binding energies for Mg ( 2 + ) ( H2O ) x complexes ( x = 2 - 10 ) .
 Chemical: hydrated magnesium; Chemical: Mg ( 2 + ) ( H2O ) x
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: hydrated magnesium; Chemical: Mg ( 2 + ) ( H2O ) x