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How many rare earth elements are they?
As of 2014, there are 17 known rare earth elements. In the early 1800s, only 2 were know.
What elements accounts for only 5 percent of the earth's crust?
Oxygen makes up approximately 46 percent of the earth's crust. There are 91 other elements that found in the crust in their natural state.
What 3 elements are found in water?
There are only 2 elements in water: hydrogen and oxygen.
Are all 109 known elements found in nature?
There are 92 "natural elements, and 21 manmade elements, for a total of 113 elements - all of which exists on earth. You probably learned there are 108 elements, but in the past 2 decades, they have discovered (or made) 5 more. This only means that you probably went to highschool in the early 90s like me.
Compare the role of nuclear fusion in the formation of the earth's naturally occurring elements and in the creation of synthetic elements in the laboratory?
The range of elements found on earth were formed by some supernova explosion in the distant past, and somehow the earth was formed from the debris and then captured by the sun. Fusion must have been involved though the exact course of these events can only be surmised. Nuclear fusion has not been used on earth to create synthetic elements, and in fact has only been produced in a few places for very short times, less than one second. You are probably thinking of nuclear fission, where operation of nuclear reactors does produce synthetic elements such as plutonium. These are called the transuranic elements.
Elements that occur somewhere on earth are what?
The planet Earth and everything on it, including us, is composed of the chemical elements. Not only are elements found on Earth, but everything found on Earth is made of elements.
Is it real that 92 elements are found on earth?
Yes! Out of the current 118 known elements 92 of them are natural occurring, and 26 are man made. Only 90 of the 92 natural elements are found on Earth. The other 2 natural elements are found in space.
Why were rare earth metals the last elements to be found?
only small amounts exists
Are the elements in the Periodic Table of Elements only found on Earth or are they also found elsewhere?
some elements in the bottom of the periodic table man has not encountered yet, some are just theories or found on over planets or in space
What are elements found in environment?
Many elements are found in the environment. In fact, all lab-created elements (e.g. technetium) are the only ones not found in the environment. Air consists of Hydrogen, Oxygen, Nitrogen amongst many others. Etc.
Are elements found in one place and why not?
any of the elements found only in one place and why not
How do elements make up the earth?
All the elements found on Earth and in the whole cosmos can be found in stars. However the rarer elements like Gold are only created in stars up to 10 times the size of our Sun in a supernova explosion. The energy released in a supernova is massive resulting in very high temperatures. These temperatures create the conditions for these elements to be formed. As a result of this the elements made in a supernova are very rare. That's why on earth Gold is very expensive as it is in demand as there isn't much of it compared to other elements.
Can hydrogen be used in it's pure state?
The answer would be no. In Earth there is no hydrogen source in its pure form. It is only found in compound with other elements.
What are the results of breeding earth and tree dragons in DragonVale?
The only thing you could get it is a tree dragon, because the only elements involved are earth and plant. Or, if you get SUPER lucky, you just MIGHT get a Rainbow Dragon.
What are the elements present on the earth surfaces?
Even though there are 92 elements that are naturally found, only eight of them are common in the rocks that make up the Earth's outer layer. These include oxygen, silica, aluminum, iron, calcium, sodium, potassium, and magnesium.
What can be said about the percentage of elements found in significant amounts in Earth's biospherelithospherehydrospher and atmosphere compare to the total number of elements listed on the periodic t?
Only 4 elements account for 5% of the total and the top 8 elements, combined, account for 99.5 percent.
What are the elements only found in protein?
There are no elements found ONLY in protein. Proteins are made up of carbon, hydrogen, oxygen, nitrogen, sulfur, and phosphorous.
