You think probable to diatomic molecules but these are not formed by a reaction.
They often form a diatomic molecule.
There are very many elements which will do that.
Hydrogen, depending upon what element it is combining with, can act either as a metal or a nonmetal. But as a nonmetal it shares electrons in the form of covalent bonds, rather than actually donating them. Similarly, carbon can react with metals or nonmetals but forms covalent bonds. To truly donate or accept electrons is to form ionic bonds, and no element has the flexibility to form ionic bonds both as a donor and as an acceptor. Elements can do one or the other, if they form ionic bonds. Some elements only form covalent bonds.
Non-metals gain electrons. Hence, they can easily form anions.
No, potassium (K) and chlorine (Cl) are not molecular. Potassium is a metallic element that exists as individual atoms, while chlorine is a nonmetal that typically exists as diatomic molecules (Cl₂) in its elemental form. When potassium and chlorine react, they form the ionic compound potassium chloride (KCl), which consists of potassium ions (K⁺) and chloride ions (Cl⁻) rather than discrete molecular units.
They often form a diatomic molecule.
Diatom via a covalent bond
When carbon and argon are combined, they do not form a compound. Carbon is a nonmetal element, while argon is a noble gas, so they do not easily react with each other to form a stable compound.
Sodium atoms will typically lose 1 electron when they react with a nonmetal to form an ionic compound. This electron loss enables sodium to achieve a stable electron configuration similar to that of a noble gas.
When an element reacts with chlorine gas, it can form a metal chloride if the element is a metal, or a nonmetal chloride if the element is a nonmetal. For example, sodium reacts with chlorine gas to form sodium chloride, while sulfur reacts with chlorine gas to form sulfur dichloride.
Bromine is a nonmetal element, so it cannot form a metallic bond with another bromine atom. Metallic bonds typically occur between metal atoms by sharing their valence electrons in a sea of delocalized electrons. Bromine tends to form covalent bonds by sharing electrons with other nonmetal atoms.
There are very many elements which will do that.
Sodium metal can react with the nonmetal chlorine to form sodium chloride, which is a white crystalline compound commonly known as table salt.
Ionic bonds are formed when metal atoms combine with nonmetal atoms. Metal atoms tend to lose electrons to form positive ions, while nonmetal atoms tend to gain electrons to form negative ions, resulting in the attraction between the oppositely charged ions forming the ionic bond.
In any diatomic element it is always a covalent bond.
Nonmetals may react with metal to form ionic compounds (salts) or other nonmetal elements to form organic compounds.
atoms