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The short answer is yes. The long answer is that isotopes have different numbers of neutrons than other isotopes of the same element, so when expressing the mass of an isotope, you don't take an average; you just add the number of neutrons and the number of protons. However, that number is not entirely accurate since the mass of a proton and a neutron are very slightly different. So, if you want to be very exact, then no, the mass of an isotope is not a whole number, but it is very, very close.
What else can I help you with?
How do isotopes differ and why is the atomic number of elements not a whole number?
Isotopes differ from each other by having different numbers of neutrons but the same number of protons since they are only the same element if they have the same number of protons. Atomic numbers aren't whole because their mass is based of the mass of hydrogen and amu's (atomic mass units) and due to how elements are formed, minute amounts of mass are lost in order to form the nuclear bonds resulting in not whole numbers.
Why are molar masses not a whole number?
Molar masses are not whole numbers because they are calculated based on the average mass of isotopes present in a sample, taking into account the abundance of each isotope. Isotopes are elements with the same number of protons but different numbers of neutrons, leading to fractional atomic masses and consequently non-whole molar masses.
Why are atomic masses of elements usually not whole numbers?
The atomic mass listed in the periodic is found by taking the average of all the different isotopes of a given element found in nature, weighted for their natural abundance.Note that the atomic mass is not the same as the atomic weight. The atomic mass is the weight of one specific isotope of one atom, and is expressed in "atomic mass units" or amu. The atomic weight is expressed in grams per mole (g/mol) and is the weighted average of all the isotopes weighted by their abundance.See the Web Links for more information about atomic mass and atomic weight.
Is the mass number an average of the masses of all naturally occurring isotopes of an element?
No, it isn't. It is the atomic weight that is a weighted average of the mass of each of the naturally occurring isotopes of an element. The mass number, or A, is the number of protons and neutrons (the so-called nucleons) in the nucleus of an atom of an element. The atomic number, or Z, is the number of protons in the nucleus of an element.
What element has the atomic number for 3.14?
No element has this atomic number. All atomic numbers are whole numbers.
Which statement best explains why most atomic masses on the periodric table are decimal numbers?
Most atomic masses on the periodic table are decimal numbers because they are weighted averages of the masses of all isotopes of an element, taking into account their relative abundance. Since isotopes have different masses, the atomic mass is typically not a whole number.
Is it okay to round atomic masses to the nearest whole number?
No, it is not okay to round atomic masses to the nearest whole number because atomic masses are typically reported to several decimal places to account for the average mass of isotopes present in nature. Rounding to the nearest whole number would lead to inaccurate calculations and results.
Why is an element's atomic mess not listed as a whole number on the periodic?
Because it is an average of the masses of the isotopes of the element, each of which has a different atomic mass (not mess!)
Why aren't the atomic masses of most elements whole numbers?
The atomic masses of most elements are not whole numbers because they take into account the average mass of all the isotopes of that element, which have different masses due to varying numbers of neutrons. This results in a weighted average that is not a whole number.
Why atomic mass of an element is not a whole number?
in case of some elements which has isotopes the atomic masses are different so the average is taken out which may come in decimals.
Why is atomic mass not a constant number?
The atomic mass is the average of all of the different isotopes of the element present in the sample. Samles taken from aound the worlld for some elements have slightly different isotope ratios and therefore have different atomic masses.
Why is the atomic mass of strontium not a whole number?
The atomic mass of strontium is not a whole number because it is an average value that takes into account the abundance of different isotopes of strontium in nature. These isotopes have different masses and occur in different proportions, resulting in a weighted average atomic mass that is not a whole number.
What would cause the average atomic mass to be close to a whole number?
The average atomic mass of an element is close to a whole number when the element has nearly equal amounts of its isotopes, with atomic masses that are close to whole numbers themselves. This occurs in elements with only one stable isotope or with stable isotopes that have similar abundances.
Do copper isotopes have a whole atomic mass?
The isotopes of copper have the relative atomic masses of 63 and 65 and these are approximations. The exact values contain decimal figures.
Why are all atomic numbers all whole numbers and most atomic mass number end with a decimals?
this is because the atomic number is the number of protons in an atom, and this never changes. However, the recorded atomic mass is a weighted average of all of the isotopes of the atom, because atomic mass is the number protons plus the number of neutrons, and the number of neutrons in an atom differs, causing different atomic masses.
Why is the atomic mass of nobelium a whole number?
The atomic mass of nobelium reported as a whole number is usually the average atomic mass of its isotopes, taking into account the natural abundance of each isotope. Since this average is calculated from the weighted average of the isotopes' masses, the result often appears as a whole number.
Why is the atomc mass not a whole number?
The atomic mass listed on the periodic table is a weighted average of all the known isotopes of an element. Since isotopes have different masses based on the number of neutrons they contain, the average atomic mass is not a whole number. It accounts for the abundance of each isotope in nature.
