Hydrogen

https://www.wikidata.org/wiki/Q556

Field Hierarchy

Parent
Physics 33M papers	Chemistry 28.9M papers	Quantum mechanics 13.3M papers	Organic chemistry 12.9M papers
Current
Hydrogen 390k papers
Child
Hydrogen production 67.8k papers	Hydride 46.6k papers	Syngas 34.7k papers	Hydrogen storage 29.3k papers
Steam reforming 19.1k papers	Hydrogen fuel 13.1k papers	Hydrogen embrittlement 10.7k papers	Dangling bond 9,526 papers
Hydrogen atom abstraction 8,076 papers		Hydrogenase 6,795 papers

Trends

Notes

History