˹á arrow R
˹áԧʹԴ
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ѤҪԡ
Ѻ͡!

ʶԵԼ
: 2401372 
й 2 ؤŷ ͹Ź
R
ͧ
Radiation 1284
Radiation 758
Radioactive 754
Radioactive Decay 927
Radioactivity 777
Radium 1451
Radon 972
Rare Earth Metals 668
Rate Constant 1239
Rate Law 1476
Rate Reaction 819
Reactants 851
Redox Reaction 1267
Reducing Reagent 1222
Representative Element 1587
Resonance 1142
Resonance Hybrid 1762
Resonance Structure 1512
Reverse Reaction 796
Reversible Reaction 1326
Rhenium 821
Rhodium 1435
Round bottomed flask:ⷡ鹡 1843
Rubidium 1039
Ruthenium 1125
Rutherfordium 1018