They often form a diatomic molecule.
You think probable to diatomic molecules but these are not formed by a reaction.
Atoms of elements in group 18 (noble gases) do not easily combine with other elements to form compounds.
The outer shell electrons of the atom form covalent bonds.
nonmetal chlorine. Both elements readily react with other elements to form compounds, with potassium giving up an electron to form a positive ion and chlorine gaining an electron to form a negative ion. Together, they form the ionic compound potassium chloride, which is commonly used as table salt.
Nonmetal atoms release energy when they gain an electron to form a negatively charged anion because the electron affinity of nonmetals is usually high. This process involves the attraction between the negatively charged electron and the positively charged nucleus of the nonmetal atom, resulting in the release of energy.
Diatom via a covalent bond
You think probable to diatomic molecules but these are not formed by a reaction.
An ionic bond is formed between two atoms with a large difference in electronegativity, typically a metal and a nonmetal. For example, sodium (Na) and chlorine (Cl) can form an ionic bond to create sodium chloride (table salt).
Sodium metal can react with the nonmetal chlorine to form sodium chloride, which is a white crystalline compound commonly known as table salt.
atoms
Nonmetals may react with metal to form ionic compounds (salts) or other nonmetal elements to form organic compounds.
Non-metal atoms typically form covalent bonds by sharing electrons to achieve a full outer electron shell and become more stable.
They form a molecule by the intermediate of chemical bonds.
Atoms react with one another and form chemical bonds to achieve a stable electron configuration. By sharing, gaining, or losing electrons, atoms can attain a full outer energy level and be in a lower energy state, increasing their stability. This allows them to form more stable compounds and maximize their bonding energy.
The basic rule is that metals tend to lose electrons to form positively charged ions (cations), while nonmetals tend to gain electrons to form negatively charged ions (anions). When a metal and a nonmetal react, the metal will typically donate electrons to the nonmetal, resulting in the formation of an ionic compound with a metal cation and a nonmetal anion.
Nonmetal atoms tend to gain electrons to achieve a full outer shell of electrons and become stable. This leads them to form anions, which are negatively charged ions, by gaining one or more electrons during chemical reactions. This electron gain allows them to attain a stable electron configuration similar to that of a noble gas.
Because carbon has four electrons in its outer energy level, it can readily form covalent bonds with other atoms, allowing it to form a wide variety of compounds. This ability to form diverse bonds is the basis for the vast array of organic molecules found in living organisms.