˹á arrow R
˹áԧʹԴ
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ѤҪԡ
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ʶԵԼ
: 2416759 
й 4 ؤŷ ͹Ź
R
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Radiation 1294
Radiation 764
Radioactive 760
Radioactive Decay 938
Radioactivity 782
Radium 1456
Radon 980
Rare Earth Metals 674
Rate Constant 1245
Rate Law 1484
Rate Reaction 827
Reactants 859
Redox Reaction 1277
Reducing Reagent 1237
Representative Element 1601
Resonance 1151
Resonance Hybrid 1772
Resonance Structure 1524
Reverse Reaction 802
Reversible Reaction 1342
Rhenium 828
Rhodium 1445
Round bottomed flask:ⷡ鹡 1856
Rubidium 1047
Ruthenium 1133
Rutherfordium 1025