كربون-14، اكتشف في مثل هذا اليوم - الجمعية المغربية للتوجيه و البحث العلمي
27. Carbon found in nature as a mixture of C 12 C 13. The average atomic mass of carbon is 12.011amu. What is the percentage abundance of carbon 12 in nature
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Assertion A : One atomic mass unit is defined as one twelfth of the mass of one carbon 12 atom.Reason R : Carbon 12 isotope is the most abundant isotope of carbon
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