EntityQ570412· pop 16· linked from 115 articlesselection ruleSign in to saveformal constraint on the possible transitions of a system from one quantum state to anotherConnectionshydrogen chlorideEntityeven and odd functionsEntityinfrared spectroscopyEntityangular momentum couplingEntityGermanEntityphysicsEntitychemistryEntityatomEntitymoleculeEntityquantum mechanicsEntityInternational Standard Book NumberEntitychemical reactionEntityatomic nucleusEntityelectromagnetismEntitydigital object identifierEntitysymmetryEntitygroupEntityspinEntitytetrahedronEntityatomic orbitalEntityCategoriesNuclear magnetic resonanceQuantum mechanicsSpectroscopy