These elements are called noble gases. Their last energy levels are already completely occupied, so they do not need to make chemical bonds.
Elements in group 8A of the Periodic Table, known as the noble gases, do not readily form chemical bonds because they have a fully occupied valence shell of electrons. This stable electron configuration makes them highly unreactive, as they do not have a tendency to gain, lose, or share electrons with other elements. Consequently, noble gases exist as monoatomic gases and are generally chemically inert.
they form the ionic compound sodium carbide
Three elements that have similar chemical properties to oxygen are sulfur, selenium, and tellurium. These elements belong to the same group as oxygen in the periodic table and have similar electron configurations, which influence their reactivity and chemical behavior. Additionally, they can form similar types of chemical bonds with other elements.
No. The noble gasses will not form bonds with most elements and never bond with metals. Metals form metallic bonds with one another, but this is considered a mixture rather than a new chemical compound.
they trade and share electrons, depending on how many are in there outer shell.
Such a process is called a chemical reaction. In a chemical reaction, the atoms of different elements form new bonds with atoms of other elements which results in formation of new substances called as products.
Noble gases do not usually form chemical bonds.
Group-14 elements share electrons. they form covalent bonds.
Why does group 4A elements tend to form covalent bonds rather than ionic bonds? 
Elements in group 18 do not often form bonds.
Family 18
chemical & physical properties
18.
generally group 1
Compounds are formed from chemical elements.
Practically all chemical elements can form salts.
yes.
they form the ionic compound sodium carbide