˹á arrow R
˹áԧʹԴ
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ѤҪԡ
Ѻ͡!

ʶԵԼ
: 2351194 
й 6 ؤŷ ͹Ź
R
ͧ
Radiation 1254
Radiation 739
Radioactive 734
Radioactive Decay 908
Radioactivity 761
Radium 1423
Radon 946
Rare Earth Metals 650
Rate Constant 1221
Rate Law 1454
Rate Reaction 801
Reactants 830
Redox Reaction 1242
Reducing Reagent 1155
Representative Element 1549
Resonance 1110
Resonance Hybrid 1650
Resonance Structure 1466
Reverse Reaction 774
Reversible Reaction 1260
Rhenium 800
Rhodium 1407
Round bottomed flask:ⷡ鹡 1792
Rubidium 1017
Ruthenium 1101
Rutherfordium 998