| gptkbp:instanceOf | gptkb:chemical_compound 
 | 
                        
                            
                                | gptkbp:appearance | colorless gas 
 | 
                        
                            
                                | gptkbp:atomicNumber | 1 
 | 
                        
                            
                                | gptkbp:atomicWeight | 1.008 
 | 
                        
                            
                                | gptkbp:block | s-block 
 | 
                        
                            
                                | gptkbp:boilingPoint | 20.271 K 
 | 
                        
                            
                                | gptkbp:CASNumber | 1333-74-0 
 | 
                        
                            
                                | gptkbp:category | nonmetal 
 | 
                        
                            
                                | gptkbp:criticalFor | 33.145 K, 1.293 MPa 
 | 
                        
                            
                                | gptkbp:crystalSystem | hexagonal 
 | 
                        
                            
                                | gptkbp:densityAtSTP | 0.08988 g/L 
 | 
                        
                            
                                | gptkbp:discoveredBy | gptkb:Henry_Cavendish 
 | 
                        
                            
                                | gptkbp:discoveredIn | 1766 
 | 
                        
                            
                                | gptkbp:electronConfiguration | 1s1 
 | 
                        
                            
                                | gptkbp:electronegativity | 2.20 
 | 
                        
                            
                                | gptkbp:firstIonizationEnergy | 1312.0 kJ/mol 
 | 
                        
                            
                                | gptkbp:flammability | highly flammable 
 | 
                        
                            
                                | gptkbp:form | gptkb:hydride_ion H2 molecule
 atomic hydrogen
 
 | 
                        
                            
                                | gptkbp:formsCompounds | gptkb:water methane
 ammonia
 hydrochloric acid
 hydrides
 
 | 
                        
                            
                                | gptkbp:foundIn | stars gas giant planets
 
 | 
                        
                            
                                | gptkbp:isotopes | gptkb:protium deuterium
 tritium
 
 | 
                        
                            
                                | gptkbp:IUPACName | hydrogen 
 | 
                        
                            
                                | gptkbp:magneticOrdering | diamagnetic 
 | 
                        
                            
                                | gptkbp:meltingPoint | 13.99 K 
 | 
                        
                            
                                | gptkbp:mostStableIsotope | gptkb:protium 
 | 
                        
                            
                                | gptkbp:namedAfter | Greek words for 'water-former' 
 | 
                        
                            
                                | gptkbp:namedFor | gptkb:Antoine_Lavoisier 
 | 
                        
                            
                                | gptkbp:oxidationStates | +1 -1
 
 | 
                        
                            
                                | gptkbp:percentageInUniverseByMass | ~75% 
 | 
                        
                            
                                | gptkbp:period | 1 
 | 
                        
                            
                                | gptkbp:phaseAtSTP | gptkb:gasoline 
 | 
                        
                            
                                | gptkbp:relatedGroup | 1 
 | 
                        
                            
                                | gptkbp:solubility | very low 
 | 
                        
                            
                                | gptkbp:symbol | H 
 | 
                        
                            
                                | gptkbp:thermalConductivity | 0.1805 W/(m·K) 
 | 
                        
                            
                                | gptkbp:type | gptkb:halogens metals
 oxygen
 
 | 
                        
                            
                                | gptkbp:uses | ammonia production fuel cells
 hydrogenation of fats and oils
 rocket fuel
 
 | 
                        
                            
                                | gptkbp:bfsParent | gptkb:Walthamite 
 | 
                        
                            
                                | gptkbp:bfsLayer | 4 
 | 
                        
                            
                                | https://www.w3.org/2000/01/rdf-schema#label | Hydrogen 
 |