˹á arrow R
˹áԧʹԴ
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ѤҪԡ
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ʶԵԼ
: 2368269 
й 5 ؤŷ ͹Ź
R
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Radiation 1263
Radiation 744
Radioactive 740
Radioactive Decay 913
Radioactivity 765
Radium 1430
Radon 953
Rare Earth Metals 655
Rate Constant 1227
Rate Law 1459
Rate Reaction 805
Reactants 834
Redox Reaction 1247
Reducing Reagent 1172
Representative Element 1563
Resonance 1119
Resonance Hybrid 1729
Resonance Structure 1483
Reverse Reaction 778
Reversible Reaction 1273
Rhenium 804
Rhodium 1413
Round bottomed flask:ⷡ鹡 1810
Rubidium 1022
Ruthenium 1106
Rutherfordium 1005