What are 5 facts about helium?
Ten Facts about Helium
- Helium is the second most abundant element in the universe, and the second lightest element.
- It is estimated that our sun produces 700 million tons of helium per second.
- Helium has the lowest boiling point of all elements—4.2 degrees Kelvin (that -268.8 Celsius)—just 4 degrees above absolute zero.
What is the physical properties of helium?
Helium is a colorless odorless gas. It is lighter than air. It is nonflammable and is only slightly soluble in water. It is chemically inert.
What is helium element made of?
Helium is composed of two electrons in atomic orbitals surrounding a nucleus containing two protons and (usually) two neutrons.
Why is helium The second element?
The atomic number of helium is 2, meaning each atom of helium has two protons. This is because the most common isotope of hydrogen has one proton and no neutrons, while each helium atom typically has two neutrons as well as two protons.
Why is helium different on the periodic table?
Helium is separated by space from hydrogen because it has a filled valence electron shell. In the case of helium, the two electrons make the valence shell the only electron shell. The other noble gases in group 18 have 8 electrons in their valence shell.
What element reacts with helium?
Helium is the second most abundant element in the universe, second only to hydrogen. Despite its virtual ubiquity, helium isn’t a team player, being totally unreactive with any other element, as any chemistry freshman will tell you.
What Colour is helium?
6.5 Gas Discharge Tubes
Why is helium on the far right of the periodic table?
Because it is a noble gas. Helium is not very electronegative because the first valence shell of electrons holds two electrons.
What period is helium in the periodic table?
|Block||s||Density (g cm−3)|
|Atomic number||2||Relative atomic mass|
|State at 20°C||Gas||Key isotopes|
How is helium mined?
Helium is mined along with natural gas, using a drill rig to drill wells deep into the earth’s crust. A drill rig must penetrate a layer called the Cap Rock to reach a natural gas reserve.
What family does helium belong to in the periodic table?
Helium belongs to the family of elements called the noble gases. These gases do not typically interact with any other atoms because they are already in their most stable form. Noble gases are the most chemically inert elements of the periodic table.
What is the deadliest element on the periodic table?
Arsenic is the most dangerous element in the periodic table. As it is scientifically proven that mere a single gram of its presence in human blood or human body through any means is ore than enough to kill.
Which is the highest element in periodic table?
Oganesson has the highest atomic number and highest atomic mass of all known elements. The radioactive oganesson atom is very unstable, and since 2005, only five (possibly six) atoms of the isotope oganesson-294 have been detected.
What are three uses of helium?
The largest use of helium is in cryogenics.