Their outer shells are already full
Krypton is an element, a noble gas, atomic number 36. It is one of the few noble gases to have been successfully bonded with another element; KrF2, krypton difluoride, can be produced in small quantities under extreme simulated conditions.
This element would be found in Group 18 of the periodic table, known as the noble gases. These gases are typically non-reactive due to their stable electron configuration. Examples of noble gases include helium, neon, and argon.
Gases that are made up of only two atoms that can be both of the same or of different elements. Hydrogen, oxygen, nitrogen, bromine, chlorine, iodine, and fluorine are seven common gases that exist as diatomic molecules of the same element. However there are still examples of diatomic molecules that are made up of non- identical atoms such as carbon monoxide, hydrogen chloride and nitric oxide.
False. The gases on Titan are primarily molecular gases such as nitrogen and methane, which are not ionically bonded.
Noble or inert gases
There is no way for us to answer- you did not say WHAT element you are asking about. Please repost a COMPLETE question, and we will try to get you a good answer.
When an atom of one element is brought in contact with an atom of another element, electrons get transferred from one element to another. However, if the atoms of same element come together then electrons are shared and not transferred. Exception to this is elements in noble gases.
Noble gases are never found bonded because they have 8 valence electrons, making them stable. Since it is stable it has no available space in it valence energy level to bond with other atoms. The above is true for Helium and Neon. Since 1962 compounds of the other noble gases have been prepared, most notably compounds of xenon with fluorine. All of these compounds are highly reactive and unstable.
Hydrogen is found in nature primarily as a compound, such as in water (H2O) or hydrocarbons. Pure elemental hydrogen is rare in nature but can be found in some volcanic gases or certain chemical reactions.
Atmosphere is a mixture made up of different gases like nitrogen, oxygen, carbon dioxide, and others. It is not considered an element or a compound because it contains multiple substances that are not chemically bonded together.
That's a difficult question to answer, because elements are made of atoms. An atom is the smallest particle of an element that has the properties of that element. Some elements, like the noble gases, can exist as single atoms. Other elements, like oxygen, exist as molecules, such as O2, which is composed of two oxygen atoms covalently bonded to one another. Metal elements are composed of many, many atoms joined by metallic bonding.
This is because on a molecular level, gases and liquids are unorganized. In solids, which do not flow, molecules are bonded together in organized, lattice structures.