˹á arrow R
˹áԧʹԴ
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ѤҪԡ
Ѻ͡!

ʶԵԼ
: 4357234 
й 12 ؤŷ ͹Ź
R
ͧ
Radiation 1558
Radiation 976
Radioactive 1228
Radioactive Decay 1378
Radioactivity 1068
Radium 2163
Radon 1094
Rare Earth Metals 1043
Rate Constant 1553
Rate Law 2108
Rate Reaction 1270
Reactants 1165
Redox Reaction 1581
Reducing Reagent 1482
Representative Element 2170
Resonance 1497
Resonance Hybrid 1432
Resonance Structure 1568
Reverse Reaction 1326
Reversible Reaction 1969
Rhenium 1092
Rhodium 2036
Round bottomed flask:ⷡ鹡 1976
Rubidium 1387
Ruthenium 1739
Rutherfordium 1574