Helium is a colorless, odorless, tasteless, non-toxic, inert monatomic gas that is the second lightest and second most abundant element in the observable universe, after hydrogen. Its atomic number is 2, and its chemical symbol is He. Helium is classified as a noble gas, which means it has a very low reactivity due to its filled electron shell.
Helium compounds are chemical compounds that contain helium as a constituent. Helium is a noble gas and is generally considered chemically inert, which means it typically does not form stable compounds under normal conditions. However, there are a few exceptions where helium can be involved in molecular structures or be part of composite materials. 1. **Helium Hydride Ion (HeH⁺)**: This was the first compound predicted to exist, and it was discovered in laboratory conditions in 2020.
Alpha decay is a type of radioactive decay in which an unstable atomic nucleus releases an alpha particle and transforms into a lighter nucleus. An alpha particle consists of two protons and two neutrons, essentially making it identical to a helium nucleus. During alpha decay, the original nucleus (parent nucleus) loses these two protons and two neutrons, causing the atomic number to decrease by 2 and the mass number to decrease by 4.
An alpha particle is a type of subatomic particle that consists of two protons and two neutrons, making it identical to the nucleus of a helium-4 atom. It is emitted during a type of radioactive decay known as alpha decay, which occurs in some heavy unstable atomic nuclei (like uranium or radium) as they seek to become more stable.
Antiprotonic helium is a type of exotic atom that consists of an ordinary helium nucleus (two protons and two neutrons) and an antiproton, which is the antimatter counterpart of a proton. In antiprotonic helium, the antiproton orbits around the helium nucleus like an electron orbits around a nucleus in a regular atom.
The Chayanda field is an oil and gas field located in the Sakha (Yakutia) region of Russia. It is part of the East Siberian region, which has been the focus of significant exploration and development due to its rich hydrocarbon resources. The Chayanda field is particularly notable for being part of Russia's efforts to increase its production and export of natural gas, especially to Asia.
Extreme Helium Stars (EHe) are a type of star that is characterized by their unique atmospheric composition, primarily consisting of helium with very little or no hydrogen. These stars are typically found in the later stages of stellar evolution, particularly among hot, massive stars that have lost a significant amount of their outer hydrogen layer.
Helion, in chemistry, generally does not refer to a specific substance or compound. However, the term can be associated with "helium" (He), which is a chemical element with atomic number 2. Helium is a noble gas that is colorless, odorless, and tasteless, and it is the second lightest element in the periodic table.
Heliox is a gaseous mixture of helium and oxygen, commonly used in medical and industrial applications. In the medical field, it is primarily employed as a therapeutic gas to help with the treatment of patients with respiratory conditions, particularly those with obstructive airway diseases such as asthma, COPD (chronic obstructive pulmonary disease), and severe bronchitis.
The Helium Act of 1925 is a piece of legislation enacted by the United States government to facilitate the production and conservation of helium, which was recognized for its strategic importance, particularly in military applications and lighter-than-air craft. The Act aimed to encourage the production of helium from natural gas fields, particularly in the Texas Panhandle, and to establish a federal helium reserve.
The Helium Privatization Act of 1996 is a U.S. federal law designed to privatize the Federal Helium Reserve and reduce the government's involvement in the helium market. The act aimed to sell off the government's helium stockpile, which had been accumulated since the 1920s for various purposes, including military and scientific uses, particularly in ballooning and aerospace applications.
A helium atom is the second lightest and second most abundant element in the universe, with the atomic number 2. It consists of two protons in its nucleus, which gives it its atomic number, along with two neutrons (in its most common isotope, helium-4) and two electrons surrounding the nucleus. **Key characteristics of helium:** 1. **Noble Gas:** Helium belongs to the group of noble gases on the periodic table.
A Helium Ionization Detector (HID) is a type of ionization detector used primarily in gas chromatography (GC) and other analytical techniques for the detection of trace gases. This detector operates using the principle of ionization of gases and is known for its high sensitivity and ability to detect a wide range of compounds. ### How It Works: 1. **Ionization Process**: The detector utilizes a stream of helium gas in an ionization chamber.
The term "Helium planet" is not a commonly used designation in planetary science, but it can refer to certain types of exoplanets that are characterized by a significant presence of helium in their atmospheric composition. One specific type of exoplanet that could be described as a "Helium planet" is a "hot Jupiter," which is a class of exoplanets that are gas giants orbiting very close to their host stars.
As of my last update in October 2023, the United States is one of the leading producers of helium in the world. Helium production in the U.S. primarily occurs through natural gas extraction, as helium is often found in association with natural gas deposits, particularly in states like Texas, Oklahoma, and Wyoming. The U.S. has significant helium reserves, including the Federal Helium Reserve near Amarillo, Texas, which has historically been a major source of helium supply.
Helium stars are a class of stars that primarily emit energy through the fusion of helium in their cores. They typically arise in specific evolutionary stages of stellar evolution, often from the remnants of more massive stars. Here are some key points about helium stars: 1. **Origin**: Helium stars usually form from the remnants of massive stars that have completed helium burning in their cores, such as during the late stages of their evolution.
Helium storage and conservation refer to the practices and technologies used to manage, store, and preserve helium, a finite and non-renewable resource that is crucial for various applications, such as in scientific research, medical technologies (like MRI machines), and high-tech industries (such as semiconductors and aerospace). ### Helium Storage 1.
A Helium-Neon (He-Ne) laser is a type of gas laser that utilizes a mixture of helium and neon gases to produce coherent light. It was one of the earliest types of lasers developed and is widely used in various applications due to its relatively simple design and stability. ### Key Characteristics: 1. **Working Principle**: The laser operates on the principle of stimulated emission. In a helium-neon laser, an electrical discharge excites helium atoms in the gas mixture.
Hydreliox is a breathing gas mixture primarily used in diving and marine applications. It typically consists of helium, oxygen, and a small percentage of nitrogen, making it a type of heliox (helium-oxygen mixture) with the addition of nitrogen. The primary purpose of hydreliox is to reduce the risks associated with deep-sea diving, such as narcosis and oxygen toxicity, which can occur at greater depths.
A hydrogen-deficient star is a type of star that contains significantly less hydrogen in its composition compared to typical stars, which are primarily composed of hydrogen and helium. These stars can be found in various categories, and their hydrogen deficiency can arise due to different processes: 1. **Evolutionary Stages**: Some stars evolve away from the main sequence during their lifetimes and can become hydrogen-deficient as they exhaust their hydrogen fuel in the core.
Helium has two stable isotopes, Helium-3 (\(^3\text{He}\)) and Helium-4 (\(^4\text{He}\)), and one unstable isotope, Helium-5 (\(^5\text{He}\)). 1. **Helium-3 (\(^3\text{He}\))**: This isotope has two protons and one neutron. It is relatively rare, constituting about 0.01% of naturally occurring helium.
The National Helium Reserve, also known as the Federal Helium Reserve, is a government-owned facility located near Amarillo, Texas. It was established in the 1920s to ensure a stable supply of helium for various applications, including military and scientific uses, particularly during World War II and the Cold War.
Pure-play helium refers to companies that focus exclusively on the exploration, production, and distribution of helium. Unlike diversified energy companies that may engage in various sectors like oil, gas, or other minerals, pure-play helium companies concentrate solely on the helium market. This specialization allows them to streamline their operations, leverage their knowledge of helium extraction and market trends, and often respond more quickly to changes in demand and supply within the helium sector.
RasGas Company Limited was a natural gas company based in Qatar, known for producing liquefied natural gas (LNG). It was established in 1997 and formed as a joint venture primarily between Qatar Petroleum and ExxonMobil. The company played a significant role in the development and expansion of Qatar's natural gas industry, particularly in the North Field, which is one of the largest natural gas fields in the world.
A Scanning Helium Ion Microscope (HeIM) is a type of microscopic imaging tool that utilizes helium ions to produce high-resolution images of materials at the nanoscale. It provides several advantages over traditional electron microscopes, such as improved resolution, reduced charging effects on insulating samples, and the ability to image delicate structures without damaging them.
The solar eclipse of August 18, 1868, was a total solar eclipse that was observed across parts of the United States, including the western regions like California and the territories that would later become parts of the midwestern and southeastern states. This eclipse was notable for several reasons: 1. **Scientific Observations**: The eclipse provided an opportunity for astronomers to conduct significant observations.
A toy balloon is a type of inflatable novelty item made from materials such as latex or foil that is often used for decoration, entertainment, or play. Toy balloons come in various shapes, sizes, and colors and are commonly used at parties, celebrations, events, and festive occasions. They can be filled with air or helium, with helium-filled balloons being able to float in the air.
Trimix is a breathing gas mixture used in scuba diving that consists of three main components: oxygen (O2), nitrogen (N2), and helium (He). It is specifically designed to reduce the risks associated with deep diving, particularly narcosis and oxygen toxicity. ### Composition: - **Oxygen (O2):** The percentage of oxygen in trimix is typically lower than what is found in regular air to mitigate the risk of oxygen toxicity at depth.
The triple-alpha process is a nuclear fusion mechanism that occurs in the cores of stars, particularly in older stars that have exhausted their hydrogen fuel and are undergoing helium burning. This process is crucial in stellar nucleosynthesis as it is responsible for the formation of carbon, an essential building block for more complex elements and the foundation for life as we know it.
WASP-107b is an exoplanet located about 200 light-years away from Earth in the constellation of Virgo. It was discovered in 2017 as part of the Wide Angle Search for Planets (WASP) project, which aims to identify transiting exoplanets using ground-based telescopes.
