˹á arrow R
˹áԧʹԴ
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ѤҪԡ
Ѻ͡!

ʶԵԼ
: 2139613 
й 11 ؤŷ ͹Ź
R
ͧ
Radiation 1168
Radiation 681
Radioactive 662
Radioactive Decay 841
Radioactivity 712
Radium 1345
Radon 853
Rare Earth Metals 594
Rate Constant 1157
Rate Law 1379
Rate Reaction 739
Reactants 769
Redox Reaction 1164
Reducing Reagent 1030
Representative Element 1410
Resonance 1048
Resonance Hybrid 1241
Resonance Structure 1304
Reverse Reaction 700
Reversible Reaction 1114
Rhenium 739
Rhodium 1325
Round bottomed flask:ⷡ鹡 1575
Rubidium 962
Ruthenium 1019
Rutherfordium 882