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20 Amazing Facts About Helium

Nothing beats the fun and whimsy of a helium-filled balloon for marking an anniversary or celebrating a seasonal event. But, other than the fact that it helps balloons float, what else do you know about helium? Aside from its use in party decorations, helium is a mystery element with a variety of unique properties that have long attracted scientists, researchers, and curious minds.

Helium is more than a gas that makes our voices squeak, from its origins in the cosmos to its function in superfluidity and essential uses in science and industry. Keep reading to discover 20 incredible facts about helium, which will reveal its intriguing nature and enormous contributions to our understanding of the universe and technological advancement.

1. After hydrogen helium is the second most plentiful element in the universe

Helium conceals a cosmic mystery that is nothing short of amazing. It is the second most prevalent element in the universe, only being outnumbered by its lighter twin, hydrogen. This inconspicuous gas which we frequently connect with floating balloons and high-pitched voices, is a cosmic heavyweight, accounting for an astounding 24% of the fundamental mass of the observable universe.

Click here for the 10 Fun Facts About Hydrogen

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Helium’s abundance in the universe is due to its extraordinary durability. It was formed in the explosive aftermath of these celestial giants as opposed to heavier elements which are typically forged in the burning hearts of stars during nuclear fusion. The fusing of hydrogen atoms occurs during supernova explosions due to the extreme heat and pressure.

Helium is then distributed across the universe, aiding in the production of new stars, galaxies, and planets. In essence, helium’s abundance is a witness to the cosmic recycling process in which elements such as helium are expelled into space and used to construct subsequent celestial bodies.

2. Helium has the lowest boiling point of any element at – 452oF

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Helium has the lowest boiling point of any known element. Helium changes from a gas to a liquid at an extraordinarily cold temperature of -268.93 degrees Celsius (-452.07 degrees Fahrenheit) displaying its unusual physical features. This extremely low boiling point is a direct result of helium’s extremely weak interatomic interactions and extremely low mass.

Its atoms are among the lightest in the universe, and their mobility is regulated by quantum physics, resulting in strange behavior. As helium cools, these quantum effects become more evident, causing the atoms to rapidly lose kinetic energy and eventually condense into a liquid state.

3. Helium is the only element that was first discovered in space before Earth

Helium holds the distinction of being the only element discovered in the wide expanse of space before its presence on Earth was established. During a solar eclipse in 1868, French astronomer Pierre Janssen and British astronomer Norman Lockyer both saw a distinct spectral line while studying the Sun.

This mysterious line, subsequently discovered as emanating from helium, grabbed their interest. Surprisingly, it took over 30 years to separate and identify helium on Earth, mostly through the study of uranium ore. This cosmic discovery emphasizes helium’s heavenly origins and profound link to the universe, firmly establishing it as an elemental wonder with an otherworldly beginning.

4. Helium got its name from the Greek word “Helios” which means sun

Helium’s name pays homage to its heavenly origins and initial discovery in the solar spectrum. It gets its name from the ancient Greek word “helios” which means “Sun.” When astronomers Pierre Janssen and Norman Lockyer discovered helium’s spectral lines during a solar eclipse in 1868 they realized its connection to the Sun.

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Because of this glowing link, they named the newly found element “helium.” This name not only honors its solar discovery, but it also serves as a permanent reminder of helium’s fundamental function in the universe, since it is still an essential component of the Sun’s composition and the source of its radiant light.

5. It is a noble gas

Helium’s noble quality classifies it as a chemically inert element known as a noble gas. Because helium atoms have a full complement of electrons in their outermost energy level, they maintain a stable and unreactive condition. Under normal settings, helium does not create chemical compounds or bonds with other elements, unlike many other elements.

Its innate stability and aversion to chemical reactions make it essential for a variety of applications requiring a non-reactive atmosphere, such as inflating balloons, cooling scientific instruments, and even serving as a shielding gas in welding. Helium is distinguished as a fundamental element with a distinct set of qualities by its inert, steadfast nature.

6. It is colorless, odorless, and tasteless

Helium has the unique property of being colorless, odorless, and tasteless in its pure state making it almost invisible to human senses. Due to the lack of sensory properties, it is especially difficult to detect without specialist equipment. Because of its transparency to visible light, it does not alter the look of the items it fills, making it excellent for inflating balloons without changing their color or appearance.

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Furthermore, the absence of flavor and taste means that any environment or substance with which it comes into contact remains intact, highlighting helium’s versatility in a wide range of applications, from scientific study to leisure activities, where its unobtrusive presence is unrecognized yet vital.

7. Helium is a rare element that occurs naturally on Earth

Helium’s existence on Earth is minor in comparison to its abundance across the universe. It is regarded as a scarce element on our planet due to the fact that it is largely produced by a slow and continuous process of radioactive decay. Radioactive materials such as uranium and thorium emit helium as a consequence of natural decay over geological timeframes.

Get to learn more about Earth’s Atmosphere here

This helium then slowly accumulates in subsurface pockets, which are commonly natural gas reservoirs. Drilling and extracting helium from natural gas resources provides the majority of the helium extracted for industrial and scientific usage. This scarcity emphasizes the significance of appropriate helium management in order to ensure the supply of helium for future generations.

8. It is a great coolant for superconducting magnets 

Helium has the highest thermal conductivity of any element making it an essential coolant in cutting-edge scientific applications. Maintaining extremely low temperatures in superconducting magnets, such as those used in magnetic resonance imaging (MRI) devices and particle accelerators is critical. Because helium can easily carry heat away from these magnets, they can function at ultra-low temperatures, assuring excellent performance and energy efficiency.

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Helium’s cooling qualities are especially beneficial to scientific instruments such as cryostats and detectors, as they help maintain the steady and exact conditions required for reliable observations. It’s outstanding thermal capability propels it to the forefront of modern scientific progress enabling discoveries in a variety of sectors.

9. Only two of the eight known helium isotopes are stable

Although there are eight known helium isotopes only helium-3 and helium-4 are stable, with the former having spin 1/2 and the latter having spin 0. All other helium radioisotopes have short half-lives, with 6He having the longest with a half-life of only 806.7 ms and 5He having the shortest with a half-life of 7.6 1022 s.

There is approximately one 3He atom for every million 4He atoms in the Earth’s atmosphere for stable isotopes. Helium-3 is also remarkable in that its isotope content fluctuates substantially depending on where it comes from.

10. Helium is lighter than air, making it excellent for filling balloons and airships

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Because of its lighter-than-air properties, helium is the favored choice for inflating balloons and airships. Helium provides buoyancy due to its lower density than surrounding air, permitting balloons to rise and airships to remain afloat. Because of this property, it is widely used in both recreational balloons and military reconnaissance airships. Furthermore, Helium is non-flammable and substantially safer, making it the gas of choice for air travel and ballooning, ensuring passenger and crew safety while still getting the needed lift.

11. It is also used in the aircraft industry to pressurize and purge fuel tanks

Helium is used in the aerospace sector to improve safety by pressurizing and cleansing fuel tanks. By injecting helium into these tanks, potentially explosive gases such as oxygen or hydrogen are displaced, lowering the risk of combustion or explosion during rocket launches or spacecraft operations. This procedure, known as inerting, results in a non-reactive environment that reduces the possibility of inadvertent ignition.

Helium’s high thermal conductivity also helps to keep tanks at regular temperatures, ensuring stable fuel conditions and preventing potentially hazardous temperature changes. Helium thus makes a substantial contribution to the safe and successful functioning of aeronautical missions.

12. Helium is the only element that cannot be solidified by cooling it

Helium is the only element that, by simply lowering its temperature, defies solidification at normal atmospheric pressure. Helium, unlike most things, does not transition from a gas to a liquid and finally to a solid when the temperature falls. At temperatures close to absolute zero (-273.15 degrees Celsius or -459.67 degrees Fahrenheit), it goes through a peculiar phase transition known as the lambda point.

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Below this critical temperature, helium-4 exhibits extraordinary behavior, transforming into a superfluid with zero viscosity and the capacity to flow without losing energy. This remarkable feature demonstrates helium’s extraordinary nature in the field of low-temperature physics.

13. The helium nucleus is made up of two protons and two neutrons

The well-known element helium-4 serves as the incredibly stable nucleus of helium atoms. It is made up of two protons and two neutrons which are kept together by the strong nuclear force. This unusually stable structure of two positively charged protons and two uncharged neutrons makes helium-4 one of the most prevalent isotopes of helium in the universe.

Read more on the 15 Fun Facts about Atoms here

This stability adds to helium-4’s prevalence in a variety of astrophysical processes, such as nuclear fusion within stars, in which hydrogen atoms combine to generate helium-4, releasing vast amounts of energy.

14. Helium regularly escapes from the Earth’s atmosphere into space

Due to its tremendous lightness, helium has the unusual ability to defy gravity and slowly disperse into space. Because helium is a finite resource on Earth, this phenomenon—known as helium escape—should be taken seriously. It cannot be regenerated on a human time frame after it has entered space.

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Future helium shortages have been feared as a result of this natural loss and rising industrial and research needs. The need for prudent helium management is shown by the Helium Privatization Act in the US, which resulted in the sale of the US National Helium Reserve and ensures that helium is available for vital uses including medical imaging, research, and aerospace.

15. Helium is used as a shielding gas in arc welding

Helium is crucial in the semiconductor sector as well as welding procedures. It is used as a shielding gas in arc welding, enveloping the welding arc and protecting the molten metal from ambient contamination, especially in high-temperature and high-energy welding procedures.

Its capacity to displace oxygen and other reactive gases guarantees that welds are clean and strong. These vital uses highlight the importance of helium in improving technology and manufacturing processes.

16. Inhaling helium can be dangerous

Inhaling helium for recreational purposes, frequently to make amusing, high-pitched voices, is a risky pastime with possibly fatal effects. When helium is inhaled, it displaces the oxygen in the lungs, resulting in hypoxia, a state in which the body does not receive enough oxygen.

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While the altered voice may appear humorous, the risks are significant. It is critical to underline that helium should never be breathed recreationally because the hazards greatly outweigh any temporary enjoyment, and the results can be disastrous.

17. The US is the largest helium supplier

For decades the United States dominated worldwide helium production, accounting for more than 90% of all useable helium. This was largely due to the National Helium Reserve of the United States, which played a critical role. However, helium production has diversified in recent years with the installation of helium extraction plants in several countries, most notably Algeria and Qatar.

These countries have large helium-containing natural gas reserves, and their facilities now contribute considerably to global helium supply. This change has helped to lessen reliance on a single supply, boosting market stability and assuring a more fair distribution of this crucial resource globally.

18. US authorities approved the use of helium for medical purposes

In April 2020, U.S. authorities took a significant step by granting approval for the use of helium for medical purposes in both humans and animals. This decision recognized the importance of helium as a critical medical resource. Helium-oxygen mixtures, often referred to as heliox, have been employed in medicine to assist individuals with respiratory issues, such as asthma or chronic obstructive pulmonary disease (COPD).

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Heliox can ease breathing difficulties and improve oxygen delivery in certain medical scenarios. This regulatory approval reaffirmed helium’s valuable role in enhancing the quality of care for patients, further expanding its applications in the medical field.

19. Helium can be extracted from the air

While helium can be found in the Earth’s atmosphere, it is present at extremely low concentrations, roughly 5 parts per million. It is feasible to extract helium from the air, but it is far more expensive than standard methods, such as natural gas drilling. The most popular method for extracting air is a multi-step process known as cryogenic distillation.

It is necessary to chill the air to extremely low temperatures, liquefy the other gases, and then separate the helium from the mixture. This procedure is substantially more expensive than getting helium from natural gas deposits, where helium concentrations can be as high as 7% or higher, due to its energy-intensive and complex nature.

20. Human blood contains a tiny amount of helium

Helium can be identified in trace amounts in human blood. This helium is often the result of exposure to helium-rich conditions, such as deep-sea diving or working in helium-using facilities. When people breathe helium-enriched air, trace amounts of the gas can enter their bloodstream. The concentration, on the other hand, remains extremely low and innocuous, offering no immediate health dangers.

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When the person resumes breathing conventional air, the helium in their blood gradually evaporates. This phenomenon is of interest to medical professionals and researchers studying the effects of various gases on the human body, but it is not a major health risk under normal conditions.

Read further on 15 Fun Facts About The Periodic Table

From its cosmic abundance to its unique behavior at ultra-cold temperatures, these 20 astounding facts about helium reveal a world of wonder. Helium’s applications range from bringing lighthearted excitement to balloon-filled gatherings to playing a key part in life-saving medical gadgets and aerospace engineering.

Even while we wonder at its unique features and appreciate its contributions to science and industry, we must keep in mind that helium, this ethereal and valuable element, is not infinite. Its finite nature serves as a reminder of the significance of responsible resource stewardship on Earth.