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All isotopes of uranium have the same number of protons, 92. A nuclide with a number of protons other than that is not uranium.
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoAll the isotopes of an element have the same number of protons and electrons (excepting, of course, ions); only the number of neutrons differ.
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Isotopes of elements?
Uranium has a number of isotopes including U235 and U238, both of which are radioactive
How are uranium238 and uranium 235 the same?
The two isotopes (or varieties) of the element uranium, U238 and U235 have slightly different weights due to different numbers of neutrons in the nucleus. But, they have the same atomic number (meaning they have the same number of protons in the nucleus and the same number of electrons bound to the nucleus). Because they have the same number of electrons, from a chemical point of view, they are identical: that is, they form the same kinds of bonds with other elements and they cannot be separated by chemical means.
Are uranium isotopes chemically different?
No. All Uranium isotopes are called Uranium because they have 92 protons. The different isotopes (233, 235, 238, etc) all have 92 protons but have different numbers of neutrons in the nucleus. The chemical characteristics of an atom are determined by the number of protons in the nucleus which controls the number of electrons it takes to balance the atom and thus the chemical valence of the atom. When you get down to it, that is the reason why enrichment of Uranium is such a difficult task since there is only a three neutron difference in weight between fissionable U235 and non-fissionable U238 and no difference in chemical properties.
What is the top number in an isotope?
An isotope is identified by atomic number (element number or name), by mass number, and by atomic weight. The mass numberfor an isotope is listed as a leading superscript such as 29Si, which in this example is silicon containing 14 protons and 15 neutrons (a rarer but stable isotope of the element). Similarly the atomic weight is indicated by a superscript such as U235 , an isotope of uranium having 92 protons and 143 neutrons.The actual atomic weight is often expressed as a decimal number corresponding to the mass of the atom in "atomic units", where a proton is about 1.0072, a neutron 1.0086, and an electron about .00055 atomic units.
Is uranium nuclear fuel?
Yes, U233, U235, and U238 are all used as nuclear fuels.
How many neutrons are in Element 92?
Element number 92 is Uranium and there are two main isotopes - U235 and U238. In U235 there are 92 protons so there are 235 - 92 = 143 neutrons. In U238 there are thus 146 neutrons
Isotopes of elements?
Uranium has a number of isotopes including U235 and U238, both of which are radioactive
What can isotopes of the same elements have a different number of what?
Neutrons in the nucleus of the element's atoms. It is the number of protons in the nucleus that determines what the element is. It is the total of neutrons and protons in the nucleus that gives the isotope number. Uranium generally comes in two isotopes, U235 and U238. All uranium is radioactive -- that is, it will decay into other elements over time. U238 is much more common and is very long lived radioactively and is not explosive and cannot be made into atomic bombs. U235 is much rarer, but is highly radioactive and can be made into atomic bombs. The two isotopes are mixed together at the atomic level. This is what Iran is trying to do now in it's efforts to concentrate enough U235 to make a bomb -- the process is called "enrichment."
What is oralloy?
Oralloy is an acronym for "Oak Ridge Alloy". Which is an alloy of Uranium 235 and Uranium 238. The U235 is the fissile isotope that is used in fission type nuclear weapons. The actual concentration is classified, but generally U235 is greater than 90%.
What is the difference between using uranium for power or bombs?
In power reactors the fuel is uranium enriched slightly to about 4 percent U235 (the fissile isotope), whereas for a bomb you need the U235 as high as possible, in the high 90's I believe.
How are isotopes of the same element named?
The same name with a different atomic mass number. As an example U235 and U238 are two isotopes of Uranium
What is U235?
2 different isotopes of uranium. isotope= element with same number of electrons, same number of protons, different numbers of neutrons. U235 has 143 neutrons and 92 protons U238 has 146 neurtons and 92 protons
How are uranium238 and uranium 235 the same?
The two isotopes (or varieties) of the element uranium, U238 and U235 have slightly different weights due to different numbers of neutrons in the nucleus. But, they have the same atomic number (meaning they have the same number of protons in the nucleus and the same number of electrons bound to the nucleus). Because they have the same number of electrons, from a chemical point of view, they are identical: that is, they form the same kinds of bonds with other elements and they cannot be separated by chemical means.
What do you called in an element having the same atomic number but different atomic masses?
Isotopes. eg U235 and U238. Both Uranium, atomic number 92, bur different isotopes.
What is being done to reverse nuclear power?
You can't reassemble the U235 nucleus after it has fissioned, so you can't put nuclear power into reverse.
Are uranium isotopes chemically different?
No. All Uranium isotopes are called Uranium because they have 92 protons. The different isotopes (233, 235, 238, etc) all have 92 protons but have different numbers of neutrons in the nucleus. The chemical characteristics of an atom are determined by the number of protons in the nucleus which controls the number of electrons it takes to balance the atom and thus the chemical valence of the atom. When you get down to it, that is the reason why enrichment of Uranium is such a difficult task since there is only a three neutron difference in weight between fissionable U235 and non-fissionable U238 and no difference in chemical properties.
The concentration of U235 in the atomic bomb?
The references I have state Oralloy is 93.5% U235. Oralloy (Oak Ridge Alloy) was used in US Uranium atomic bombs as the fissile material. However they also say that any enrichment 20% U235 or higher is fissile and could be used to make a bomb, it would require a higher critical mass to work though. One source I have states that early Soviet Uranium atomic bombs used ~97% U235, but the US felt this level of enrichment to be unnecessary and excessively expensive.
