heavy hydrogen

noun 0.682

dihydrogen

noun 0.677

antihydrogen

noun 0.656

hydrogen

noun 0.645

deuteride

noun 0.604

hydride

noun 0.603

liquid helium

noun 0.600

biohydrogen

noun 0.596

deuterium

noun 0.596

protium

noun 0.591

hydrogen iodide

noun 0.590

oxyhydrogen

noun 0.585

metal hydride

noun 0.581

positronium

noun 0.579

hydrogen halide

noun 0.578

titanium hydride

noun 0.571

hydrogen cyanide

noun 0.569

hydrogen ion

noun 0.566

aluminium hydride

noun 0.565

transhydrogenase

noun 0.556

hexaboride

noun 0.554

hydrogen line

noun 0.553

tetrahydro

noun 0.551

hydrogen peroxide

noun 0.549

hydrogen spectrum

noun 0.545

heavy water

noun 0.545

hydrazine

noun 0.544

helium

noun 0.543

heliox

noun 0.542

hydrogenolysis

noun 0.541

hexafluorobenzene

noun 0.541

hydroperoxyl

noun 0.541

hydrogen fluoride

noun 0.539

hydrogen selenide

noun 0.539

hydrogen electrode

noun 0.538

deuterated water

noun 0.538

hydrogenation

noun 0.537

hydrogen sulfide

noun 0.536

hydrogen bromide

noun 0.534

lithium hydride

noun 0.533

propadiene

noun 0.532

standard hydrogen electrode

noun 0.532

dihydropteridine

noun 0.532

phosphine

noun 0.532

hydronium

noun 0.531

hydrogen bond

noun 0.529

gas hydrate

noun 0.528

hexapole

noun 0.528

dehydrogenation

noun 0.527

hyperfine structure

noun 0.526

borohydride

noun 0.526

hexafluoride

noun 0.522

hybrid orbital

noun 0.522

hadron

noun 0.521

hydrogen burning

noun 0.520

polyhydroxybutyrate

noun 0.519

interhalogen

noun 0.519

pentane

noun 0.518

hydrogen bomb

noun 0.518

isopentane

noun 0.517

dihydroxyphenyl

noun 0.517

borane

noun 0.516

antiproton

noun 0.516

tetrahydropyran

noun 0.515

dihydronaphthalene

noun 0.515

tritium

noun 0.515

diborane

noun 0.514

dihydropyran

noun 0.512

bipolaron

noun 0.512

paraxylene

noun 0.511

alpha particle

noun 0.510

hydrodeoxygenation

noun 0.508

hydrosulfide

noun 0.507

hydriodic acid

noun 0.507

dihalide

noun 0.506

methane hydrate

noun 0.506

persulfide

noun 0.506

peroxide

noun 0.505

tritiated water

noun 0.505

halocarbon

noun 0.504

hydrogen economy

noun 0.504

charmonium

noun 0.504

dimethylhydrazine

noun 0.503

diatomic

noun 0.501

hexane

noun 0.501

cyclohexane

noun 0.500