Helium is a chemical element. It is inert and a gas (at room temperature).
Helium exists in liquid form only at extremely low temperatures.
The boiling point and critical point depend on the isotope of the helium. He-4 boils at 4,2 K and He-3 boils at 3,2 K (1 atm pressure).
At normal pressures helium is never a solid. Solid helium requires a temperature of 1-1.5 K (about −272 °C or −457 °F) and about 25 bar (2.5 MPa) of pressure.
Helium is considered a noble gas, as it belongs to group 18 of the periodic table. It is colorless, odorless, and non-reactive, making it useful for various applications such as filling balloons and airships.
No, helium does not readily undergo any chemical reactions.
Helium is considered unreactive because it has a filled outer energy level with two electrons in its 1s orbital. This makes it very stable and unlikely to form chemical bonds with other elements.
Yes, helium is considered a solute when it is dissolved in a solvent, like a liquid. Helium is a noble gas that can be dissolved in certain liquids, such as water, at high pressures.
Yes, helium is considered to be expensive. It is a finite resource and its production and supply are limited. The cost of helium has been increasing in recent years due to the growing demand and limited availability, which makes it relatively expensive compared to other gases.
because it is
Yes.
Inert I believe
Helium is considered a noble gas, as it belongs to group 18 of the periodic table. It is colorless, odorless, and non-reactive, making it useful for various applications such as filling balloons and airships.
Yes. matter is anything that occupies space and has volume. Helium gas will obey this
Helium is considered an inert noble gas. Only some unstable compunds of helium are known today: HeNe, HgHe10, WHe2.
Both hydrogen and helium are considered as non metals, yes.
Helium in a chemical element, and an inert gas. It does not want to be an electrical conductor, so it is considered an insulator.
No, helium does not readily undergo any chemical reactions.
Helium is considered unreactive because it has a filled outer energy level with two electrons in its 1s orbital. This makes it very stable and unlikely to form chemical bonds with other elements.
Yes, because it is an Element.
helium has completely filled valence orbitals similar to that of noble gases and is chemically inert at room temperature.