|atomic mass of carbon 12 in amu||1.73||0.2||6915||55|
Carbon-12 is of particular importance in its use as the standard from which atomic masses of all nuclides are measured: its mass number is 12 by definition and contains 6 protons, 6 neutrons and 6 electrons.How do you calculate the atomic mass of carbon?
To calculate the atomic mass of a single atom of an element, add up the mass of protons and neutrons. Example: Find the atomic mass of an isotope of carbon that has 7 neutrons. You can see from the periodic table that carbon has an atomic number of 6, which is its number of protons.What is the major use of carbon 12?
Carbon 12 has its own importance, as it is used as a standard form for measuring the atomic weight of all elements. Before 1959, oxygen was the standard form used and it was in 1961 that Carbon 12 replaced oxygen as the standard form of measurement.What is the atomic mass unit of carbon?
An atomic mass unit (symbolized AMU or amu) is defined as precisely 1/12 the mass of an atom of carbon-12. The carbon-12 (C-12) atom has six protons and six neutrons in its nucleus.