Number of fundamental particles in D 3 O^ + ion ( Mass number of oxygen = 16 )
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15.99491461956
Unsourced material may be challenged and removed. Oxygen-16 (16O) is a stable isotope of oxygen, having 8 neutrons and 8 protons in its nucleus. It has a mass of 15.99491461956 u. Oxygen-16 is the most abundant isotope of oxygen and accounts for 99.762% of oxygen's natural abundance.
Two isotopes of oxygen. ... Because protons and neutrons are roughly equal in mass, an isotope's number is equal to the sum of its protons and neutrons. Therefore, oxygen 16 has 8 protons and 8 neutrons, oxygen 17 has 8 protons and 9 neutrons, and oxygen 18 has 8 protons and 10 neutrons.
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