Helium - The Periodic Table part 5

Elemental symbol: He
Atomic number: 2

Group: Noble Gasses

Stable Isotopes: 4He (common helium), 3H

Some Radioactive Isotopes: 5He, 6He, 7He, 8He, 9He, 10He

Some Allotropes: N/A

Melting point: 0.95K at 25 atmospheres of pressure (helium will not solidify under normal pressure)

Boiling point: 4.222K, -268.928°C, or -452.07°F

State at room temperature (20°C/68°F): Gas

Density: 0.1785 g/l

Common compounds: N/A

Discovered by: Sir William Ramsey independently from Per Teodor Cleve and Nils Abraham in 1896

Helium is the second most abundant element in the universe, accounting for about 24% of the universe. Helium is also very unreactive, a property that companies use. It is used in welding, and in blanketing highly reactive substance. ‘Blanketing’ is done by keeping a substance from reacting by surrounding it by an nonreactive substance. Helium does not make compounds in nature. Like hydrogen, helium is light enough to escape Earth’s gravity, but it can be found in trace amounts in our atmosphere. Our atmosphere is about 0.0005% helium. The helium supply is refreshed due to the radioactive decay of uranium (U) and thorium (Th) and cosmic rays (atom fragments that rain down from the sky). Helium glows a creamy pink/peach or yellow when put in a tube and electrified. Helium is the first element to be discovered in space. It was found in the Sun in 1896. The fact that it was discovered in the Sun gave helium its name. ‘Helios’ in Greek means ‘sun’.

Balloons, one is filled with nitrogen (N) and the other with helium/Globos, un es lleno de nitrógeno (N) y el otro con helio - Credit/Crédito: Britannica ImageQuest. https://quest.eb.com/failedlogin?target=%2F. Accessed 27 Aug. 2019.  

Helio

Símbolo elemental: He
Numero atomíco: 2

Grupo: Gases nobles

Isótopos estables: 4He (helio commun), 3He

Algunos isótopos radiactivo: 5He, 6He, 7He, 8He, 9He, 10He

Algunos Alótropos: No corresponde

Punto de derretimiento: 0.95K en 25 atmósferas de presión (helio no va a solidificarse debajo de presión normal)

Punto de hirviendo: 4.222K, -268.928°C, o -452.07°F

Estado en la temperatura ambiente (20°C/68°F): Gas

Densidad: 0.1785 g/l

Compuestos comunes: No corresponde

Descubierto por: Sir William Ramsey independientemente de Per Teodor Cleve y Nils Abraham in 1896

Helio es el segundo más abundante elemento en el universo, contabilización de alrededor 24% del universo. Helio también es muy no reactivo, una propiedad que compañías usan. Es usado en soldadura, y en circundar sustancias reactivos. Ese ‘circunda’ es hecho cuando un sustancia reactivo es rodearon en un sustancia no reactivo. Helio no crea compuestos en la naturaleza. Cómo hidrógeno, helio es demasiado ligero para escapar la gravedad de la Tierra, pero puede ser encontrado en cantidades minúsculas en nuestro atmósfera. Nuestro atmósfera es alrededor 0.0005% helio. El suministro de helio es refresco debido a el decaimiento radiactivo de uranio (U) y torio (Th) y rayos cósmicos (fragmentos de átomos que caen del cielo). Helio brilla un rosado/durazno cremoso o amarillo cuando es ponido en un tubo y electrizado. Helio es el primero elemento para ser descubierto en espacio. Era descubierto en el Sol en 1896. El hecho que era descubierto en el sol regalo helio su nombre. ‘Helios’ en griego significa ‘sol’.

Flora

Sources/Fuentes de información: 

Information/Información

Gray, Theodore W., and Nick Mann. The Elements: a Visual Exploration of Every Known Atom in the Universe. Black Dog & Leventhal Publishers, 2009.

James, Alice, et al. Lift-the-Flap Periodic Table. Usborne Publishing Ltd, 2017.

“Helium | Definition, Properties, Uses, & Facts.” Encyclopedia Britannica, https://www.britannica.com/science/helium-chemical-element. Accessed 27 Aug. 2019.

“Helium-4.” Wikipedia, 31 July 2019. Wikipedia, https://en.wikipedia.org/w/index.php?title=Helium-4&oldid=908637524.

Technical Data for the Element Helium in the Periodic Table. https://periodictable.com/Elements/002/data.html. Accessed 27 Aug. 2019.

Facts about Helium – 11 Interesting Facts from Chemicool.Com. https://www.chemicool.com/elements/helium-facts.html. Accessed 27 Aug. 2019.

It’s Elemental - The Element Helium. https://education.jlab.org/itselemental/ele002.html. Accessed 27 Aug. 2019.

Hydrogen and Helium | StarDate Online. https://stardate.org/astro-guide/hydrogen-and-helium. Accessed 27 Aug. 2019.

Why Did the Universe Start off with Hydrogen, Helium, and Not Much Else? | ScienceBlogs. https://scienceblogs.com/startswithabang/2013/07/05/why-did-the-universe-start-off-with-hydrogen-helium-and-not-much-else. Accessed 27 Aug. 2019.

Science, Elizabeth Howell 2018-05-11T00:38:00Z, and Astronomy. “What Are Cosmic Rays?” Space.Com, https://www.space.com/32644-cosmic-rays.html. Accessed 27 Aug. 2019.

Help with translation/Ayuda con traducción

SpanishDict, https://www.spanishdict.com/?utm_source=social&utm_medium=facebook&utm_campaign=share. Accessed 27 Aug. 2019.

Tabla Periódica Dinámica. //www.ptable.com/?lang=es. Accessed 27 Aug. 2019.