˹á arrow R
˹áԧʹԴ
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ѤҪԡ
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ʶԵԼ
: 2172691 
й 9 ؤŷ ͹Ź
R
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Radiation 1182
Radiation 686
Radioactive 677
Radioactive Decay 856
Radioactivity 719
Radium 1358
Radon 869
Rare Earth Metals 606
Rate Constant 1168
Rate Law 1390
Rate Reaction 747
Reactants 776
Redox Reaction 1179
Reducing Reagent 1057
Representative Element 1430
Resonance 1052
Resonance Hybrid 1293
Resonance Structure 1329
Reverse Reaction 713
Reversible Reaction 1134
Rhenium 751
Rhodium 1341
Round bottomed flask:ⷡ鹡 1624
Rubidium 973
Ruthenium 1029
Rutherfordium 897