The mass number of Oxygen is 16amu.
The Weighted Average Atomic Mass for every component is found on the periodic table (That long decimal number close to the base of each case). This number is a mix of all the known Isotopes and essentially discloses to you the normal mass you would expect per particle in the event.
The Mass Number is the mass of a specific particle separately and is estimated in Atomic Mass Units (AMU); these will dependably be entire numbers.
The most widely recognized Isotope is found by adjusting the Weighted normal found on the occasional table to the closest entire number.
The primary researchers to decide relative nuclear masses were John Dalton and Thomas Thomson somewhere in the range of 1803 and 1805 and Jöns Jakob Berzelius somewhere in the range of 1808 and 1826.
What is the mass number of sodium?
The mass number of sodium is 23amu.
What is the mass number of calcium?
The mass number of sodium is chlorine is 35.453amu
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