38208
Absorptions for Ln are weak as electric dipole transitions are parity forbidden ( Laporte forbidden ) but can gain intensity due to the effect of a low-symmetry ligand field or mixing with higher electronic states ( " e.g. " d orbitals ) .
 Laporte
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Laporte