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A gas is a condition of material that has neither a definite volume nor a defined shape. In other words, a gas takes on the shape and volume of the container in which it is contained. Condensation of gases into liquids or ionization of gases into plasma. The particles in a gas are further apart than those in a liquid. It’s possible that gas particles are elements or compounds. A gas can be either a pure material (e.g., oxygen, helium, or carbon dioxide) or a mixture (e.g., nitrogen, oxygen, helium, or carbon dioxide) (e.g., air, natural gas).
Here some examples of gases:-
- Acetylene
- Air
- Argon
- Carbon dioxide
- Carbon monoxide
- Helium
- Natural gas
- Neon
- Nitrogen
- Oxygen
- Propane
- Water vapor
About gases:-
Even in the presence of gravity and regardless of the amount of substance in the container, a gas is a sample of matter that conforms to the shape of the container in which it is contained and achieves a uniform density inside the container. Gaseous substance, often known as vapour, will disperse into space if it is not contained. The term “gas” can also refer to the state or condition of substance that possesses this attribute.
The atoms or molecules of matter in the gaseous state move freely among themselves and are, in most cases, more loosely packed than the molecules of the same substance in the solid or liquid states. It is possible to compress a sample of gaseous stuff. At room temperature (about 20 oC or 68 oF), oxygen, hydrogen, and water at standard atmospheric pressure and a temperature over 100 oC or 212 oF are examples of gases.
About Noble gases:-
The ability to remain calm when provoked—to turn up one’s nose and disregard minor human flaws—is widely regarded as a wonderful human characteristic.
Noble gases have a natural affinity towards what humans see to be a never-ending pursuit. Noble gases, which are most commonly encountered as monatomic gases, have entirely filled outer electron shells and hence have no tendency to combine with other elements, creating compounds with other elements is extremely rare.So, just as a nobleman might be pressured to lose his dignity, a noble gas can be compelled to react. The outer electrons of a noble gas can be ionised with enough energy, and once ionised, the gas can take electrons from other elements. Noble gases do not form many compounds even under these conditions. There’s only a few hundred known to exist. Xenon hexafluoride (XeF6) and argon fluorohydride are two examples (HArF).
More Information about Noble Gases
The noble gases are the elements in the periodic table’s final column. Group 18, often known as inert gases, rare gases, the helium family, or the neon family, is a family of inert gases. Helium, neon, argon, krypton, xenon, and radon are the seven elements that make up this group. At typical room temperature and pressure, these elements are gases. Noble gases are distinguished by the following characteristics:
- Low level of responsiveness
- Melting point and boiling point are close to one other (liquid over a narrow range)
- Electronegativity is extremely low
- Under normal circumstances,
- high ionisation energy gases
- usually colourless and odourless.
These elements are helpful for a wide range of applications due to their lack of responsiveness. They can be used to protect reactive substances from being exposed to oxygen. For usage in lights and lasers, they are ionised.
The noble metals, which have a low reactivity, are a similar group of elements (for metals).
List of Noble gases
- Helium (He),
- Neon (Ne),
- Argon (Ar),
- krypton (Kr),
- xenon (Xe),
- radon (Rn),
- oganesson (Og).
1)Helium (He):- Helium is represented by the letter He. Helium is a naturally occurring gas in the atmosphere of Earth and other planets with an atomic number of 2.
2)Neon(Ne):- Neon is represented by the letter Ne. The atomic number of neon is ten, and it is a naturally occurring gas in the atmosphere.
3)Argon:- Argon is represented by the symbol Ar. Argon has an atomic number of 18 and is a naturally occurring gas in the atmosphere.
4)Krypton:- Krypton: Kr is the symbol for krypton. Krypton is a naturally occurring gas with an atomic number of 36.
5)Xenon:- Xenon is represented by the symbol Xe. Xenon is a naturally occurring gas with an atomic number of 54.
6)Radon:- Radon is the abbreviation for radon. Radon is a radioactive gas that is created by the disintegration of heavy metals like radium and has an atomic number of 86.
7)Oganesson:- The oganesson sign is Og. The atomic number of oganesson is 118, and it is a man-made radioactive element.
Properties of Noble gases:-
Physical properties
Noble gases are found as a group because they have comparable physical qualities. Physical properties refer to an element’s physical qualities, such as its boiling point, melting point, and solubility. The physical properties of noble gases include low boiling and melting points, as well as high ionisation energies. They have modest interatomic forces as well.
Chemical properties
The ability of a substance to undergo a chemical reaction is referred to as chemical properties. Color, odour, flammability, and reactivity are only a few of them. The chemical characteristics of noble gases vary greatly. Noble gases are odourless, colourless, nonflammable, and have a low reactivity in general. Because they have a complete set of electrons in their outer valence, they have a low reactivity.
Conclusion
In other words, a gas takes on the shape and volume of the container in which it is contained. Here some examples of gases:- Acetylene Air Argon Carbon dioxide Carbon monoxide Helium Natural gas Neon Nitrogen Oxygen Propane Water vapor About gases:- Even in the presence of gravity and regardless of the amount of substance in the container, a gas is a sample of matter that conforms to the shape of the container in which it is contained and achieves a uniform density inside the container. The outer electrons of a noble gas can be ionised with enough energy, and once ionised, the gas can take electrons from other elements. Group 18, often known as inert gases, rare gases, the helium family, or the neon family, is a family of inert gases. The noble metals, which have a low reactivity, are a similar group of elements. Helium is a naturally occurring gas in the atmosphere of Earth and other planets with an atomic number of 2. The atomic number of neon is ten, and it is a naturally occurring gas in the atmosphere. Argon has an atomic number of 18 and is a naturally occurring gas in the atmosphere. Radon is a radioactive gas that is created by the disintegration of heavy metals like radium and has an atomic number of 86. The atomic number of oganesson is 118, and it is a man-made radioactive element.
