˹á arrow R
˹áԧʹԴ
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ѤҪԡ
Ѻ͡!

ʶԵԼ
: 2440465 
й 4 ؤŷ ͹Ź
R
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Radiation 1320
Radiation 774
Radioactive 784
Radioactive Decay 953
Radioactivity 792
Radium 1471
Radon 994
Rare Earth Metals 686
Rate Constant 1257
Rate Law 1493
Rate Reaction 841
Reactants 871
Redox Reaction 1290
Reducing Reagent 1251
Representative Element 1646
Resonance 1163
Resonance Hybrid 1784
Resonance Structure 1545
Reverse Reaction 816
Reversible Reaction 1384
Rhenium 840
Rhodium 1465
Round bottomed flask:ⷡ鹡 1867
Rubidium 1058
Ruthenium 1150
Rutherfordium 1041