˹á arrow R
˹áԧʹԴ
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ѤҪԡ
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ʶԵԼ
: 1706753 
й 7 ؤŷ ͹Ź
R
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Radiation 1074
Radiation 586
Radioactive 674
Radioactive Decay 806
Radioactivity 642
Radium 995
Radon 714
Rare Earth Metals 634
Rate Constant 859
Rate Law 1035
Rate Reaction 761
Reactants 690
Redox Reaction 1027
Reducing Reagent 732
Representative Element 1007
Resonance 812
Resonance Hybrid 845
Resonance Structure 1101
Reverse Reaction 739
Reversible Reaction 912
Rhenium 615
Rhodium 968
Round bottomed flask:ⷡ鹡 1030
Rubidium 756
Ruthenium 817
Rutherfordium 782