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What is the atomic weight of an element that has two isotopes one with a mass of 30 amu and the other with a mass of 32 amu?
Wiki User
∙ 12y ago
The Atomic Mass of the element cannot be discovered with the given information. It was not specified as to the ratio of the isotopes of the element. If they two isotopes are equally represented, then it's half the sum of the masses of the two isotopes, which is 63 + 65 = 128, and 128 / 2 = 64 amu.
If another ratio (or perhaps a percentage) of the isotopes if given, then a calculation can be made to discover the atomic mass of the element. This calculation will reflect the different amounts of the two isotopes present in samples of that element.
Added:Though the answer given here is correct for the question stated above, there is a more clearing answer for the suggested question: Which element has two isotopes .... (etc.).This is typically true for copper, Cu, atom no. 29, of which two natural occurring isotopes exist:
- Cu-63, mass 62.92960 a.m.u., occurrence 69.1%
- Cu-65, mass 64.92779 a.m.u., occurrence 30.9%
The average (relative) atomic mass = 63.55
Wiki User
∙ 13y ago
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Is oxygen 16 and nitrogen 16 isotopes of each other?
No, they are isotopes with the same atomic mass. But they are isotopes of different elements and so are very different from on another. For example nitrogen-16 and nitrogen-14 are isotopes of the same element.
Why are molar masses not a whole number?
Because chlorine (like almost every other element) exists as several isotopes. The molar mass reflects the combined weight and proportion of each of those isotopes.
What differentiates an isotope of an element from any other atom of that element?
Isotopes are species of atoms having same atomic no. but different atomic masses. So an isotope has either lesser or more neutrons than the usual atom of the element ( often called the most abundant isotope).
Can you always determine an element by the number of neutrons?
No, because some elements have Isotopes, with the same Proton number but different Neutron numbers. Sometimes therefore, the neutron number can overlap with that of isotopes of other elements. For example, two of Helium's isotopes share neutron numbers with two of Hydrogen's isotopes. Deuterium has 1 neutron, and so does 3He, Tritium has 2 neutrons, and so does 4He. It is the number of protons which determines which element it is.
What subatomic particles can differ between neutral atoms of the same element?
The subatomic particle that makes atoms of different elements different from each other is the proton. This is given as the atomic number of the element on the periodic table.
What does the atomic mass minus atomic number tell you about the element?
Atomic mass minus atomic number will give you the average number of neutrons in that element. Bear in mind that atomic mass is based on the actual weight of that element, which is the result of whatever isotopes appear in nature; it is rarely based on only a single isotope.
What are atomic mass?
Atomic mass is the weighted average of all naturally occurring isotopes. Or in other words, the mass of an element. It's located under the element symbol on the periodic table.
What does the atomic weight of an element tell us about it?
The atomic number tells us the number of protons in the nucleus of an atom. The atomic mass tells us the sum of the protons and neutrons in a nucleus.The atomic weight (not mass) of a chemical element is the ratio between the average mass of the atoms of this element to 1/12 from the atomic mass of carbon-12.The atomic mass is a term applied only to specific isotopes; the unit is the same as above. Is a value denoting the total mass of all the protons, neutrons, and electrons in an isotope.The mass number tells us the number (the sum) of protons and neutrons in the nucleus of an atom.The atomic number, on the other hand, tells us how many protons are in the nucleus of an atom.IUPAC publish periodically tables of atomic weights - the last edition is from 2009-2010.For the atomic masses of isotopes the last published edition is The AME 2003 atomic mass evaluation, edited by Audi, Wapstra and Thibault.
When two atoms have the same number of protons but a different number of neutrons what are these atoms?
They are isotopes of each other.
If an element had three isotopes with known masses what other information is needed to find the average atomic mass of the element?
The abundance percentage of each isotope
How is atomic mass computed?
The atomic weight of an element is the average of the atomic mass of each individual isotope of that element, weighted by the natural abundance of each isotope.In other words, as an example, if we had an element called "X" that had two isotopes, with mass 10 and 20, and each isotope had the same abundance, then the atomic weight of X would be 15 (that is (10+20)/2 = 15). But if the same element X had the same two isotopes, but now the abundance of the lighter isotope was 90% and the abundance of the heavier isotope was only 10%, then the atomic weight would be much less due to the difference in abundance; that is you would not take a weighted average: 0.9*10 + 0.1*20 = 11.See the Web Link to the left for a chart of all the isotopes of the elements, their individual masses, and their natural abundances. It is with such a chart that the actual atomic weights are calculated.
A form of an element that differs in its atomic weight from other forms of that same element is?
Elements that differ in atomic weight from other atoms of the same element (ie their atomic masses are different to each others due to a different number of neutrons) are known as isotopes. Example: carbon-14 which has 6 protons and 8 neutrons in its nucleus and an atomic mass of 14, as opposed to regular carbon (carbon-12) which has 6 protons and 6 neutronsin its nucleus, and an atomic mass of 12. Carbon-14is an isotope of carbon.
Is oxygen 16 and nitrogen 16 isotopes of each other?
No, they are isotopes with the same atomic mass. But they are isotopes of different elements and so are very different from on another. For example nitrogen-16 and nitrogen-14 are isotopes of the same element.
Can 2 isotopes of the same element differ in the number of protons?
An element is defined by the number of protons, so this cannot vary. Isotopes of a particular element are different in the number of neutrons within the atoms. These isotopes are said to be comparatively "lighter" or "heavier" than other isotopes based on the total of protons and neutrons (atomic mass).
Why are molar masses not a whole number?
Because chlorine (like almost every other element) exists as several isotopes. The molar mass reflects the combined weight and proportion of each of those isotopes.
Atoms of the same element may differ in their number?
The specific terms atoms and elements are related in The Atomic Number. The Element that an Atom belongs to is determined by the number of Protons that are contained within Its atomic nucleus. The varying number of neutrons [for any given number of protons] that are needed to keep the atomic nucleus held together is what results in the varying Atomic Weight when compared to the Atomic Number.
What is the mass number for cesium?
The standard atomic weight for cesium is 133. There are 3 other radioactive cesium isotopes that have atomic weights of 134, 135, and 137. Cesium 133 is the only one that is found in nature. The other isotopes are synthetic.
