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
![Illustration Chemical Isotopes Carbon All Atoms Stock Vector (Royalty Free) 1717122961 | Shutterstock Illustration Chemical Isotopes Carbon All Atoms Stock Vector (Royalty Free) 1717122961 | Shutterstock](https://www.shutterstock.com/shutterstock/photos/1717122961/display_1500/stock-vector-illustration-of-chemical-isotopes-of-carbon-all-atoms-are-made-up-of-protons-neutrons-and-1717122961.jpg)
Illustration Chemical Isotopes Carbon All Atoms Stock Vector (Royalty Free) 1717122961 | Shutterstock
![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 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](https://s3.ap-south-1.amazonaws.com/byjus-media-delivery/videos/mpkgr-production-5ee8792d/rfbchd/Search_QNA/220720/Portrait/B1_21/21QNAEXEMP11CHEH01_Some_Basic_Concepts_of_Chemistry/21QNAEXEMP11CHEH01Q39/thumbs/2a676173/270x360.jpg)