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The Atomic Mass is an average, allowing for the relative abundances of different isotopes.

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Q: Atomic mass differnet from the atomic mass number why is that?
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Related questions

What is atomic mass and atomic number for radium?

The atomic number is 88 and the atomic mass is 226


What is the atomic mass number of krypton?

83.98 amu is the Atomic Mass, 36 is the atomic number.


What do you do with an atomic number and an atomic mass?

The atomic number is the number of a chemical element in the periodic table of Mendeleev; the atomic number is equal to the number of protons and electrons. The atomic mass is the mass of an atom expressed in relative atomic mass units.


What is phosphorus' atomic number and atomic mass number?

Atomic number for p is 15. atomic mass for p is 31.


What is the atomic number and mass of boron?

Atomic Number = 5 Atomic Mass = 10.811


What is the difference between the atomic number and the atomic mass?

Atomic mass is the mass of 1 mole of the element. Atomic number is the number of protons the element has


What is the atomic no and atomic mass of graphite?

Atomic number 6, atomic mass 12.


What does atomic mass do?

The atomic mass is equal to the number of protons plus neutrons. So if you know the atomic number then you can find out the number of neutrons Atomic # is the amount of Protons or Electrons Atomic Mass- Number of protons plus neutrons Atomic Mass-Atomic Number = Amount of neutrons


How much is the atomic mass and atomic number for corbon?

Carbon is a chemical element with an atomic number of 6 and an atomic mass of about 12.011 atomic mass units.


What is the atomic mass and atomic number of Kr in the periodic table?

Atomic number: 36 Atomic mass: 83.8


Do isotopes have the same atomic number and the same atomic mass?

No: They have the same atomic number but not the same atomic mass.


What do you get when you subtract atomic number from atomic mass?

mass #-atomic#=# of neutrons