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كبيرة جدا أو صغيرة جدا. مثلا: 0.001 kg1= g1000 = 1000 mg. One degree Celsius is equal to one Kelvin (in magnitude). * Notice it is not "degrees Kelvin"...

تقسيمهاB,C,N,O,F are one group.) Consider the first group. H,He,Li,Be. Remember as it is. It's a nice ring to it which helps. One advise is remember it...