˹á arrow R
˹áԧʹԴ
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ѤҪԡ
Ѻ͡!

ʶԵԼ
: 4292034 
й 26 ؤŷ ͹Ź
R
ͧ
Radiation 1498
Radiation 952
Radioactive 1185
Radioactive Decay 1352
Radioactivity 1030
Radium 2118
Radon 1071
Rare Earth Metals 1017
Rate Constant 1503
Rate Law 2066
Rate Reaction 1225
Reactants 1121
Redox Reaction 1553
Reducing Reagent 1455
Representative Element 2107
Resonance 1460
Resonance Hybrid 1394
Resonance Structure 1506
Reverse Reaction 1258
Reversible Reaction 1884
Rhenium 1052
Rhodium 1970
Round bottomed flask:ⷡ鹡 1932
Rubidium 1337
Ruthenium 1695
Rutherfordium 1539