- What makes up 99.9 of the universe?
- What is the least common element in the universe?
- What is the hardest element to find?
- What is the most common element in the universe?
- How rare is gold in the universe?
- Is plutonium man made?
- Are actinides man made?
- What are the 5 most abundant elements in the universe?
- What is the rarest man made element?
- What element is the heaviest?
- What is the most expensive element on earth?
- What are the 5 most common elements?
What makes up 99.9 of the universe?
“99.9 percent of the Universe is made up of plasma,” says Dr.
Dennis Gallagher, a plasma physicist at NASA’s Marshall Space Flight Center.
“Very little material in space is made of rock like the Earth.” The plasma of the magnetosphere has many different levels of temperature and concentration..
What is the least common element in the universe?
The least abundant naturally occurring element in the universe is Astatine – Wikipedia .To this date, Astatine has never been found in nature. … Naturally occurring Astatine is formed when Francium, the second least abundant element, decays.
What is the hardest element to find?
Chances are you have seen it. The hardest pure element is carbon in the form of a diamond. Diamond is not the hardest substance known to man. Some ceramics are harder, but they consist of multiple elements.
What is the most common element in the universe?
HydrogenHydrogen — with just one proton and one electron (it’s the only element without a neutron) — is the simplest element in the universe, which explains why it’s also the most abundant, Nyman said.
How rare is gold in the universe?
Gold is rare throughout the Universe because it’s a relatively hefty atom, consisting of 79 protons and 118 neutrons. That makes it hard to produce, even in the incredible heat and pressure of the ‘chemical forges’ of supernovae, the deaths of giant stars responsible for creating most chemical elements.
Is plutonium man made?
Plutonium is a radioactive metallic element with the atomic number 94. It was discovered in 1940 by scientists studying how to split atoms to make atomic bombs. Plutonium is created in a reactor when uranium atoms absorb neutrons. Nearly all plutonium is man-made.
Are actinides man made?
The actinides group includes mostly man-made elements with only a few exceptions such as uranium and thorium. The actinides are most known for the elements uranium and plutonium which are used in nuclear reactors and nuclear bombs.
What are the 5 most abundant elements in the universe?
1.) Hydrogen. Created during the hot Big Bang but depleted by stellar fusion, ~70% of the Universe remains hydrogen.2.) Helium. About 28% is helium, with 25% formed in the Big Bang and 3% from stellar fusion.3.) Oxygen. … 4.) Carbon. … 5.) Neon. … 6.) Nitrogen. … 7.) Magnesium. … 8.) Silicon.More items…•
What is the rarest man made element?
AstatineAstatine is the rarest element on Earth; only approximately 25 grams occur naturally on the planet at any given time.
What element is the heaviest?
uraniumThe heaviest element found in any appreciable amount in nature is uranium, atomic number 92. (The atomic number refers to the number of protons in an atom’s nucleus.)
What is the most expensive element on earth?
franciumThe most expensive natural element is francium. Although francium occurs naturally, it decays so quickly that it cannot be collected for use. Only a few atoms of francium have been produced commercially, so if you wanted to produce 100 grams of francium, you could expect to pay a few billion U.S. dollars for it.
What are the 5 most common elements?
Living organisms often contain trace amounts of several elements, but the most abundant ones are oxygen, carbon, hydrogen, nitrogen, calcium and phosphorus.Oxygen. Oxygen is the most abundant element contained within living organisms, composing about 65% of the human body. … Carbon. … Hydrogen. … Nitrogen. … Sulfur. … Phosphorus.