Uranium and neodymium are very different chemical elements.
Uranium, atomic number 92, has several isotopes, and 238U is just one of them. Remember that a nucleon is one of the particles that make up the nucleus of an atom, and that means a proton or a neutron. In the case of this isotope of uranium, it has the 92 protons we'd expect for uranium, and it has 146 neutrons in its nucleus along with those protons. That's 238 necleons in the nucleus if 238U. Wikipedia has more information on uranium and on the nucleon, and links are provided.
No, we do not.
There are thought to be about 5 million tons of the grade of ore being mined now, typically 0.1 to 0.25 percent uranium oxide. So that represents 5000 to 12500 tons of uranium. This will keep the industry going for some years yet. Eventually lower grade ores will have to be mined which will be more expensive, but there is no reason to expect a shortage.
Physically I would expect to find the same boiling and melting points, and the same density. Chemically, I would expect the same reactivity with other substances.
Well, based on recent studies... In terms of power production, 1 kilogram of uranium-235 is equivalent to 2.7 million kilograms of coal. With those numbers in mind, I would expect 1 gram of uranium-237 to cost somewhere between $300-$600 million. There are many other factors involved but I do know that I need to be in the business of selling uranium because unemployment isn't paying my bills.
Uranium and neodymium are very different chemical elements.
pupu
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Elements in a same group have same number of valence electrons and hence similar physical and chemical properties.
to be a hard substance.
Yes, they are both classified as non-metals and are located in Group 14.
Uranium cannot be tested with the flame test. Uranium hasn't been tested with the flame test. If the temperature in a nuke were similar though, you could expect a red or yellowish burn. With the bead test, it is a greenish.
Elements in the same group are most similar.
92 protons.
The newest officially discovered elements are Ununquadiumand Ununhexium so, we'll focus on those.Ununquadium will be part of the Carbon series, so we would expect it to have properties similar to those elements (e.g. 4 electrons in the outer shell). The closest relation to it in that group would be Lead.Ununhexium will be part of the Oxygen series, so, again, we would expect it to have properties similar to those elements (e.g. 6 electrons in the outer shell). The closest relation to it in that group would be Polonium, which is also the first radioactive element.
Rhenium is similar to technetium.
Technetium is chemically similar to manganese and rhenium.