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What 2 radioactive elements were chosen for the atomic bomb?
Uranium-235 and plutonium-239 were the two radioactive elements chosen for the atomic bomb dropped on Hiroshima and Nagasaki.
Why was uranium used for nuclear war?
Its one of only 2 elements that have fissile isotopes, the other is plutonium which must be manufactured from uranium in reactors.
How are uranium and plutonium alike?
Plutonium has the same composition as uranium, except for the fact that it contains one more neutron and one more proton. Actually Plutonium-239 has 2 more protons and 2 more neutrons than Uranium-235.
Elements are combined to make compounds?
Yes, chemical compounds are made up of elements combined together.
Uranium consists of 2 what and 2 what?
So far as I know, there are no "2 what and 2 what"s that make up uranium. Uranium has 92 protons in its nucleus and 92 orbital electrons. The number of neutrons in the nucleus depends on what isotope you are interested in.
What kind of elements are in nuclear bombs?
In World War 2 the Nuclear bombs were Uranium and Plutonium. Nowadays they use Hydrogen.
Can 2 or more elements join together to make something new?
Yes, 2 or more elements can combine to form a compound with different properties than the individual elements. An example is hydrogen and oxygen combining to form water.
What is the ration from oxygen to uranium?
The oxygen to uranium ratio is exactly 2 for the stoichiometric uranium dioxide (UO2). 2 oxygen atoms/1 uranium atom = 2
Is it possible to make nuclear weapon from other substance than uranium or plutonium?
no, these are the only elements with isotopes both unstable enough to support a nuclear chain reaction yet stable enough to not spontaneously fission too much causing a fizzle. these isotopes are uranium-235 (natural), plutonium-239 (bred from uranium-238), uranium-233 (bred from thorium-232).however once you have a fission bomb it is possible to add the following elements to make far more powerful fusion bombs: hydrogen and lithium. the necessary isotopes are hydrogen-2 (aka deuterium, natural), hydrogen-3 (aka tritium, bred from lithium-6 or lithium-7), lithium-6 (natural), lithium-7 (natural).
What element is 2 million times more radioactive than Uranium?
radium
How many naturally occurring elements are found on this planet?
I say there are 92. At school, we were taught that there are 92 naturally occurring chemical elements on Earth. They are all the elements from hydrogen to uranium. However it's a bit more complicated than that. Here's some more detail: There are 2 elements of the first 92 that are so unstable they are not found in nature. Actually minute traces of these have now been detected, I believe. There are 2 elements beyond uranium that do occur naturally as the product of the radioactive decay of Uranium. So, the final total is probably 92. However, it may be anything from 90 to 94, depending on what you include.
What are fissionable elements?
Any elements (more specifically isotopes of elements) that are capable of undergoing the process of nuclear fission. Only Uranium-235 and Plutonium-238 are fissionable out of the entire periodic table of the elements. Nuclear fission is a special type of radioactive decay that splits the nucleus of an atom, releasing large amounts of energy. Unlike other forms of decay, fission can be controlled and does not occur spontaneously. A slow-moving neutron that hits a nucleus of a fissionable element becomes absorbed by the element making it extremely unstable. (Think of it like throwing a brick at an already unstable brick wall.) The nucleus of the atom collapses, (splits) releasing energy, more neutrons, and 2 new elements. (a.k.a. no more uranium atom)
