From being the second lightest element to being the second in line in terms of abundance in Universe, Helium is an interesting element in the Period Table. Named after a Greek god, the element has some unique properties. In this article on interesting Helium facts, we are going to learn 30 facts, some of which may have already been known to you. Still, consider this as a refresher course. In case you need the information for your school project, feel free to use it.
But, before we start…
|Group||18 of Periodic Table|
|Block||S of PT|
|Element Family||Noble Gas|
|Element State at Room Temperature||Gas|
|Atomic Mass||4.002602 amu (atomic mass unit)|
|Number of electrons||2|
|Number of protons||2|
|Number of neutrons||2|
|Melting Point||0.95K or -457.96 ºF or -272.20 ºC|
|Boiling Point||4.222 K or -452.070 ºF or -2683928 ºC|
|Atomic Radius||1.40 Å|
|Covalent Radius||0.37 Å|
|Stable Isotopes||Helium-3 (3He) and Helium-4 (4He)|
|3He Abundance||1.34 x 10-4 % (that is, 0.00034 %)of total Helium found naturally.|
|4He Abundance||99.999866% of Helium found naturally|
Interesting Helium Facts: 1-5
2. Of the total elemental mass of our known or visible universe, Helium makes up 23%. However, compared to its presence in entire universe, its abundance on Earth is very rare.
3. Helium is an inert gas. It is non-toxic, completely odorless, tasteless and has no color.
4. Helium belongs to the family of noble gases. There are 7 noble gases (Oganesson, Radon, Xenon, Krypton, Argon, Neon, Helium) of which, Helium has least density and it is lightest of all the noble gases.
5. When it comes to reactivity of the noble gases, neon is the least reactive while helium takes the second spot in being the least reactive noble gas.
Interesting Helium Facts: 6-10
6. Of all elements that exist in this universe, Helium has the lowest boiling point and lowest melting point.
7. In order to convert Helium into liquid state or solid state, one needs to apply extremely low temperatures and extremely high pressures.
8. When radioactive emissions take place through alpha-decay (α-decay), the emissions are basically Helium nuclei.
9. Helium gas when ionized, gives a glow of reddish-orange hew. It was the yellow spectral line of Helium that led to its discovery.
10. In case someone accidentally inhales Helium, the pitch of his or her voice is raised or increased.