Elements 112-118 are part of the transactinide series and are synthetic elements that are typically created in laboratories through nuclear reactions. They are highly unstable and have very short half-lives, limiting their existence in nature.
No, only the elements up to Uranium (Z=92) occur naturally on Earth. The rest have only been made synthetically, because of their radioactivity which renders them unstable and thus unable to exist naturally. The synthetically made elements are called transuranic elements.
Silver, gold, and platinum occur freely in nature because they are relatively unreactive elements that do not easily combine with other elements. This allows them to exist in their elemental form in areas where they have been deposited through various geological processes.
Over 118 elements have been discovered and confirmed on the periodic table.
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.
There are variety of such elements. They have not been found on earth's surface.
92
There are about 118 different elements that are currently included in the Periodic Table. There have also been elements that have been found in nuclear and laboratories accelerators.
Homosexuality doesn't occur in "cases." It's part of human nature, and has been around as along as humans have been around.
Elements 112-118 are part of the transactinide series and are synthetic elements that are typically created in laboratories through nuclear reactions. They are highly unstable and have very short half-lives, limiting their existence in nature.
Technetium, neptunium, and promethium are considered natural elements because they can be produced through nuclear reactions in stars or supernovae, and they do occur naturally in trace amounts on Earth as decay products of uranium and thorium. Despite being rare, they do have naturally occurring isotopes that have been observed in nature.
No, only the elements up to Uranium (Z=92) occur naturally on Earth. The rest have only been made synthetically, because of their radioactivity which renders them unstable and thus unable to exist naturally. The synthetically made elements are called transuranic elements.
Elements like hydrogen, helium, carbon, oxygen, and iron occur naturally on Earth as they are stable and present in various minerals, rocks, and living organisms. Other naturally occurring elements include nitrogen, silicon, sulfur, and many others found in the Earth's crust and atmosphere.
Silver, gold, and platinum occur freely in nature because they are relatively unreactive elements that do not easily combine with other elements. This allows them to exist in their elemental form in areas where they have been deposited through various geological processes.
I believe it is Uranium. All elements heavier than uranium are man-made. Here's an interesting article... http://space.newscientist.com/article/dn13828-has-the-heaviest-element-been-found.html
Sulfur is one of the 92 naturally occurring elements, and is not a compound of any others. So you can't split or decompose sulfur to get any other elements, and you can't combine other elements to make sulfur.
Yes, noble gases do not typically form compounds with other elements in nature because of their stable and inert nature. However, some rare exceptions include xenon compounds that have been synthesized in the laboratory but do not occur naturally in the environment.