What is Helium ?
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deepika2029
Manoj
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- deepika2029
- Posts : 10954
Join date : 2019-01-07
Re: What is Helium ?
Thu Jan 10, 2019 12:01 pm
Elements can be classified based on their physical states (States of Matter) e.g. gas, solid or liquid. This element is a solid. This element is a gas. Helium is classified as an element in the 'Noble Gases' section which can be located in group 18 of the Periodic Table. The term 'Noble gas' derives from the Old High German word Edelgas from 'edili' meaning "noble".
- deepika2029
- Posts : 10954
Join date : 2019-01-07
Re: What is Helium ?
Thu Jan 10, 2019 12:01 pm
The name 'noble gases' is an allusion to the old, similarly termed 'Noble Metals'. The Noble Metals included gold, silver and platinum which were so called due to their long association with the aristocracy. For additional facts and information about the element refer to Helium Properties.
- deepika2029
- Posts : 10954
Join date : 2019-01-07
Re: What is Helium ?
Thu Jan 10, 2019 12:02 pm
A colorless, odorless inert gaseous element occurring in natural gas and with radioactive ores. It is less soluble in water than any other gas. It is used as a component of artificial atmospheres and laser media, as a refrigerant, as a lifting gas for balloons, and as a super fluid in cryogenic research.
- deepika2029
- Posts : 10954
Join date : 2019-01-07
Re: What is Helium ?
Thu Jan 10, 2019 12:02 pm
Helium was first detected during a solar eclipse in 1868 as a bright yellow line in the spectrum of the chromosphere of the Sun, by French astronomer Pierre Janssen .
- faizan khan
- Posts : 11332
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Re: What is Helium ?
Thu Jan 10, 2019 12:02 pm
Helium is commercially recovered from natural gas deposits, mostly from Texas, Oklahoma and Kansas.....
- deepika2029
- Posts : 10954
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Re: What is Helium ?
Thu Jan 10, 2019 12:03 pm
Helium exists only as a monatomic gas,Interesting information on the Medical Uses of Helium, Health and Treatments. The main medical uses of helium are in respiratory therapy and testing. It is also used in the prevention of nitrogen narcosis and decompression sickness. Helium-oxygen therapy is the administration of a mixture of helium and oxygen.
- faizan khan
- Posts : 11332
Join date : 2019-01-07
Re: What is Helium ?
Thu Jan 10, 2019 12:03 pm
Helium gas is used to inflate blimps, scientific balloons and party balloons......
- deepika2029
- Posts : 10954
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Re: What is Helium ?
Thu Jan 10, 2019 12:04 pm
Helium is the 2nd most abundant element in the universe with the symbol of He. Helium is an Noble gas with 2 protons and 2 electrons with 2 neutrons. Helium is an colorless gas, but glows red orange when placed in an electric field with an atomic weight of 4 atomic mass units. Helium has an melting point of 0.95 Kelvin, or minus 457.96 degrees Fahrenheit, and an boiling point of 4.222 Kelvin, or minus 452.070 degrees Fahrenheit.
- faizan khan
- Posts : 11332
Join date : 2019-01-07
Re: What is Helium ?
Thu Jan 10, 2019 12:05 pm
Helium is classified as an element in the 'Noble Gases' section which can be located in group 18 of the Periodic Table.......
- faizan khan
- Posts : 11332
Join date : 2019-01-07
Re: What is Helium ?
Thu Jan 10, 2019 12:06 pm
Helium is a chemical element with the symbol He and atomic number 2. Helium is a colorless, tasteless and odorless gas. Helium is the second most common element in the Universe (after hydrogen), making up around 24% of its mass......
- faizan khan
- Posts : 11332
Join date : 2019-01-07
Re: What is Helium ?
Thu Jan 10, 2019 12:07 pm
The good news is, breathing helium does not kill brain cells. The bad news is that breathing helium can, in fact, kill you — but not because of the helium, rather because the lack of oxygen when you inhale the helium.......
- meenu007
- Posts : 9617
Join date : 2019-01-07
Re: What is Helium ?
Thu Jan 10, 2019 12:09 pm
Elements can be classified based on their physical states (States of Matter) e.g. gas, solid or liquid. This element is a solid. This element is a gas. Helium is classified as an element in the 'Noble Gases' section which can be located in group 18 of the Periodic Table.
- meenu007
- Posts : 9617
Join date : 2019-01-07
Re: What is Helium ?
Thu Jan 10, 2019 12:10 pm
It is used as a component of artificial atmospheres and laser media, as a refrigerant, as a lifting gas for balloons, and as a super fluid in cryogenic research. Helium was the first gas used for filling balloons and dirigibles. The Atomic Number of this element is 2 and the Element Symbol is He.
- meenu007
- Posts : 9617
Join date : 2019-01-07
Re: What is Helium ?
Thu Jan 10, 2019 12:11 pm
Helium was first detected during a solar eclipse in 1868 as a bright yellow line in the spectrum of the chromosphere of the Sun, by French astronomer Pierre Janssen . It was discovered by Sir William Ramsey in 1895. The English astronomer Norman Lockyer and the English chemist Edward Frankland named the element.
- meenu007
- Posts : 9617
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Re: What is Helium ?
Thu Jan 10, 2019 12:11 pm
Helium exists only as a monatomic gas
- meenu007
- Posts : 9617
Join date : 2019-01-07
Re: What is Helium ?
Thu Jan 10, 2019 12:12 pm
Interesting information on the Medical Uses of Helium, Health and Treatments. The main medical uses of helium are in respiratory therapy and testing. It is also used in the prevention of nitrogen narcosis and decompression sickness. Helium-oxygen therapy is the administration of a mixture of helium and oxygen.
- meenu007
- Posts : 9617
Join date : 2019-01-07
Re: What is Helium ?
Thu Jan 10, 2019 12:12 pm
Component of artificial atmospheres and laser media
Refrigerant
Lifting gas for balloons
Superfluid in cryogenic research
Deep sea diving
- Abhishek
- Posts : 12935
Join date : 2019-01-07
Re: What is Helium ?
Thu Jan 10, 2019 12:12 pm
The chemical element of atomic number 2, an inert gas which is the lightest member of the noble gas series....
- meenu007
- Posts : 9617
Join date : 2019-01-07
Re: What is Helium ?
Thu Jan 10, 2019 12:13 pm
Check out Helium on the Periodic Table which arranges each chemical element according to its atomic number, as based on the Periodic Law, so that chemical elements with similar properties are in the same column.
- Abhishek
- Posts : 12935
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Re: What is Helium ?
Thu Jan 10, 2019 12:13 pm
The first evidence of helium was observed on August 18, 1868, as a bright yellow line with a wavelength of 587.49 nanometers in the spectrum of the chromosphere of the Sun.
- Abhishek
- Posts : 12935
Join date : 2019-01-07
Re: What is Helium ?
Thu Jan 10, 2019 12:13 pm
The line was detected by French astronomer Jules Janssen during a total solar eclipse in Guntur, India.This line was initially assumed to be sodium.
- Abhishek
- Posts : 12935
Join date : 2019-01-07
Re: What is Helium ?
Thu Jan 10, 2019 12:14 pm
On October 20 of the same year, English astronomer Norman Lockyer observed a yellow line in the solar spectrum, which he named the D3 because it was near the known D1 and D2 Fraunhofer line lines of sodium.
- Abhishek
- Posts : 12935
Join date : 2019-01-07
Re: What is Helium ?
Thu Jan 10, 2019 12:14 pm
He concluded that it was caused by an element in the Sun unknown on Earth. Lockyer and English chemist Edward Frankland named the element with the Greek word for the Sun......!!
- Abhishek
- Posts : 12935
Join date : 2019-01-07
Re: What is Helium ?
Thu Jan 10, 2019 12:15 pm
In 1907, Ernest Rutherford and Thomas Royds demonstrated that alpha particles are helium nuclei by allowing the particles to penetrate the thin glass wall of an evacuated tube, then creating a discharge in the tube to study the spectrum of the new gas inside....
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