13446
The highest occupied molecular orbitals of these small aluminum clusters are found to contain varying degrees of s - p mixing , with Al ( 3 ) ( - ) containing the " most hybridized " orbital and Al ( 4 ) ( - ) containing the " least hybridized " orbital .
 Chemical: aluminum; Chemical: Al ( 3 ) ( - ); Chemical: Al ( 4 ) ( - )
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: aluminum; Chemical: Al ( 3 ) ( - ); Chemical: Al ( 4 ) ( - )