Noble Gases

4 grams.

Approximately, mass (in grams) of 1 mole of any chemical element is just the atomic mass of this element (4 - for He, 12 - for C, and so on). It follows from the definition of one mole - number of atoms in 12 g of C.

Noble gases are nonmetals. They are colorless, odorless gases that are known for their low reactivity and full outer electron shells.

Oxygen and helium gases can be separated through methods like fractional distillation or membrane separation. In fractional distillation, the gases are separated based on their boiling points, while membrane separation uses a membrane with specific permeability properties to separate the gases based on their diffusion rates.

Hydrogen has one electron and needs one more.

Helium has two electrons and has filled shell.

Carbon needs four more electrons to fill the valence shell

Oxygen needs two more electrons to fill the valence shell

Yes, noble gases have full valence shells, which is why they are stable and generally do not react with other elements. Their electron configurations result in a complete octet of electrons in their outer shell.

There are 8 electrons in the outer level of all the noble gases except helium. This full outer level gives them stability and makes them less reactive. Helium, as a noble gas, has only 2 electrons in its outer level.

Helium can make objects and people appear to float because it is less dense than air. When helium-filled balloons are released, they rise due to the buoyant force acting on them. However, helium itself does not have the ability to make humans float on its own.

1 mole of He-4 isotope weight about 4 g

So 1.5 mole of He-4 isotope weight about 6 g

Nobles lived in large estates or castles, often with luxurious surroundings and servants to attend to their needs. They typically held positions of power and influence in society, and their main responsibilities included managing their lands, participating in courtly life, and upholding their family's reputation. Nobles also had access to education, cultural pursuits, and leisure activities, but their lives were often governed by strict social expectations and obligations.

Noble gases light up and give off their distinct colors when electricity is passed through them, causing their electrons to become excited. As the electrons return to their stable state, they release energy in the form of light. Each noble gas emits a unique color based on the specific energy levels of its electrons.

Using the ideal gas law (PV = nRT), where P is pressure, V is volume, n is number of moles, R is the ideal gas constant, and T is temperature in Kelvin, we can solve for pressure. Plugging in the values, the pressure of the 4 moles of helium in a 50 liter tank at 308 K is approximately 81.6 atm.

Mark Noble, the footballer, lives in London, England. He has spent the majority of his football career playing for West Ham United, a football club based in London.

Yes, a helium balloon can be left outside. However, it may deflate faster due to changes in temperature and air pressure. It is also susceptible to being caught by wind and potentially popping on sharp objects.

Helium has the least number of neutrons among the elements listed.

because helium weighs 4u and air (80% nitrogen) weighs about 14u. because helium has less mass, it has less gravity and rises. it has also to be a gas as a substance in a gas form has a much lower density as a liquid or solid form. earlier they used hydrogen (1u), but that is highly explosive.

(u is relative mass for atoms)

Helium is often supplied in compressed gas cylinders. It is available in smaller sizes from "party supply stores" for filling balloons, and in larger tanks for uses in welding, in science and in industry. We also see helium supplied as a refrigerated liquid -- a cryogenic substance. Industrial gas suppliers have helium available in both forms.

The primary source of helium is as a byproduct of natural gas recovery, mostly in the United States. Much of the natural gas the U.S. gets from domestic wells is "rich" in helium, and this inert or noble gas is recovered through a distillation process and is vended separately. It is through the radioactive decay of heavy elements deep within the earth's crust that helium comes to be in the natural gas deposits in the first place. As an interesting but related side note, most helium is stored in unused mines that have been sealed and converted into helium storage facilities. A link can be found below for more information.

Helium has a high thermal conductivity which helps to transfer heat efficiently during the welding process. This property allows for better control over the welding temperature and helps to prevent distortion in the welded material.

Yes. matter is anything that occupies space and has volume. Helium gas will obey this

right side, last group (or last column).

Noble gases are group 18 elements.

Both hydrogen and helium are gaseous elements that are not as dense as the nitrogen and oxygen in air, and can be used to fill balloons to make them lighter-than-air. Helium is the least reactive of the two, and therefore safer to use.

No, a helium atom is not an aerosol. An aerosol is a suspension of fine solid particles or liquid droplets in a gas. Helium, on the other hand, is a noble gas that exists as a single atom and is not a suspension of particles in a gas.

Neon gas is extracted from the atmosphere through a process called fractional distillation. Once collected, the gas is purified and stored in cylinders under pressure. When electricity is passed through the gas, it emits a bright orange-red light, making it usable for applications such as in neon signs and lighting.

2.02atm

As atoms get larger, they have a weaker grip on their electron shell. Remember that as indicated by Coulomb's Law, the attraction between opposite electrical charges is inversely proportional to the square of the distance between them. Whereas, the attraction increases in direct proportion to the amount of the electrical charge. So a larger atom has more protons in the nucleus, with which to attract electrons, but the increasing distance of the electrons from the nucleus will reduce the attraction to a greater extent than the increased number of protons is increasing it.

So, as noble gases get heavier, and their grip on their electrons weakens, they become more capable of losing an electron and therefore entering into chemical reactions of some kind.