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The atomic weight or Atomic Mass.
What else can I help you with?
How is the mass number of an isotope different from the average atomic mass that is on the periodic table?
The mass number for a particular isotope of an element is a precise value. The average atomic mass for an element is the value you would measure for that element given all the isotopes it has and their abundance in the sample.
How can isotpes of carbon be separated?
Mass spectrometer. (and centrifuges)
How is the molar mass of an element related to average atomic mass?
The molar mass of an element is the mass of one mole of atoms in that element. It is directly related to the average atomic mass, which is the weighted average of the masses of all isotopes of that element based on their natural abundance. The molar mass is usually very close to the average atomic mass of the element.
What is the atomic mass number of 28.09?
The atomic mass number of an element is the sum of the number of protons and neutrons in its nucleus. To get the atomic mass number of 28.09, it typically corresponds to the average atomic mass of an element on the periodic table. For example, the element silicon has an average atomic mass of approximately 28.09, indicating that a silicon atom has an atomic mass number of around 28.
Which is the average of the mass numbers of an element's isotopes?
the Atomic Mass
What is the difference between mass number relative atomic mass and average atomic mass?
The mass number is the total number of protons and neutrons in an atom's nucleus. Relative atomic mass is the weighted average mass of all the isotopes of an element, taking into account their natural abundance. Average atomic mass is the weighted average mass of an element's isotopes in a given sample, considering their abundance in that sample.
How are isotpes of an element the same and different?
Isotopes of an element are the same in that they are both forms of the same element. All carbon isotopes, for example, are forms of the carbon atom. Each isotope will possess the same number of protons and electrons (equivalent to the element's atomic number). However, isotopes of an element possess different numbers of neutrons, altering their atomic mass. As such, if you know the atomic mass (or weight) of a given isotope, you already know the number of protons and electrons. Using the measured mass of the proton (around 1.007 amu) and the measured mass of the electron (around 0.00055 amu), you can determine the remaining mass from the neutrons and, consequently, the number of neutrons.
What is the mass of an element?
The mass of an element is determined by the total number of protons and neutrons in its nucleus. This mass is typically measured in atomic mass units (amu) and is an average of all the naturally occurring isotopes of that element.
What does a mass number determine?
mass number = number of protons + number of neutrons DIFFERENT FROM ATOMIC MASS atomic mass = weighted average of all the isotopes of that element
Which best describes the definition for the atomic mass of an element?
The atomic mass of an element is the average mass of an element's isotopes, weighted by their natural abundance. It is expressed in atomic mass units (u) and is often close to the mass number of the most abundant isotope of the element.
What is a mass number atomic mass number?
The atomic number is the number of protons in an atom. This number is fixed and determines what element that atom is. The Atomic Mass is the mass of an atom and is roughly equivalent to the number of protons plus the average number of neutrons that atoms of that particular element.
Why is the atomic mass of an element not a whole number while the atomic number is?
The atomic number refers to the number of protons in the atom. Since the proton cannot be an in-between number, the atomic number will have to be a whole number. On the other hand, the atomic mass does not have to be a whole number because it is the mass of an atom and is roughly equivalent to the number of protons plus the average number of neutrons in that particular element.
