˹á arrow R
˹áԧʹԴ
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˹á
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ѤҪԡ
Ѻ͡!

ʶԵԼ
: 1207422 
й 5 ؤŷ ͹Ź
R
ͧ
Radiation 505
Radiation 348
Radioactive 385
Radioactive Decay 512
Radioactivity 399
Radium 702
Radon 461
Rare Earth Metals 392
Rate Constant 547
Rate Law 673
Rate Reaction 455
Reactants 453
Redox Reaction 773
Reducing Reagent 403
Representative Element 574
Resonance 547
Resonance Hybrid 415
Resonance Structure 763
Reverse Reaction 420
Reversible Reaction 508
Rhenium 373
Rhodium 540
Round bottomed flask:ⷡ鹡 635
Rubidium 492
Ruthenium 442
Rutherfordium 471