˹á arrow R
˹áԧʹԴ
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ѤҪԡ
Ѻ͡!

ʶԵԼ
: 4329152 
й 11 ؤŷ ͹Ź
R
ͧ
Radiation 1534
Radiation 969
Radioactive 1207
Radioactive Decay 1365
Radioactivity 1059
Radium 2140
Radon 1081
Rare Earth Metals 1032
Rate Constant 1533
Rate Law 2094
Rate Reaction 1251
Reactants 1150
Redox Reaction 1569
Reducing Reagent 1464
Representative Element 2147
Resonance 1484
Resonance Hybrid 1421
Resonance Structure 1544
Reverse Reaction 1305
Reversible Reaction 1924
Rhenium 1073
Rhodium 2016
Round bottomed flask:ⷡ鹡 1953
Rubidium 1363
Ruthenium 1718
Rutherfordium 1559