When do chemical bonds form?

Answer 1

Based on your question, you have probably noticed that just throwing two chemicals together does not mean that a bond will form. This fact is a good thing, because if every chemical or element that came in contact with another bonded, the world would be constantly reacting. In order for chemicals to bond, a reaction needs to take place. Without adding energy, a reaction will only take place if both compounds or elements will become more stable after the reaction. "Becoming more stable" means that they will both have a full octet of electrons, and a complete energy level.

If you look at a Periodic Table, group one elements have one valence (or outer energy shell) electron. In order to be stable it wants a full octet, so it will react with a group seven element so each element in the compound has a full octet. It does this by giving its electron to the group seven element, because it is far easier to lose one electron than it is to gain seven. There is much more that goes with this process, for example compounds that have more than two elements, but you get the general idea.

To read more see the attached link.

Answer 2

In order for chemicals to bond, a reaction needs to take place. Without adding energy, a reaction will only take place if both compounds or elements will become more stable after the reaction. "Becoming more stable" means that they will both have 8 electrons in the valence shell.

If you look at a Periodic Table, group one elements have one valence (or outer energy shell) electron. In order to be stable it wants a full octet, so it will react with a group seven element so each element in the compound has a full octet. It does this by giving its electron to the group seven element, because it is far easier to lose one electron than it is to gain seven.

Edit: Getting a good picture of the formation of chemical bonds requires a good understanding of Molecular Orbital Theory with the Linear Combination of Atomic Orbitals (LCAO) which represent orbitals of molecules (bonding sigma and pi bonds as well as antibonding sigma and pi bonds). Chemical bonds usually form with the constructive overlap (interaction) of filled HOMO's (Highest Occupied Molecular Orbitals) with LUMO's (Lowest Unoccupied Molecular Orbitals).

Bonds can also form from the interaction of free radicals.

Read more: How_to_get_chemicals_to_bond

Answer 3

A chemical bond is an attraction between atoms that allows the formation of chemical substances that contain two or more atoms. The bond is caused by the electromagnetic force attraction between opposite charges, either between electrons and nuclei, or as the result of a dipole attraction (I'd prefer not to list all of the other physics dipoles).

Answer 4

Note: All reference to electrons are to valence electrons.

There are three types of bonds; covalent, ionic, and metallic. In covalent bonds, atoms share electrons. In ionic bonds, one atom gives its electron to the other. In metallic bonds (mostly used by metals), the electrons free-float and attract all the protons to each other. Covalent bonds are the easiest to make, and to break.

Answer 5

Bonds are made through transferring or sharing electrons.

Answer 6

Chemical bonds can be formed in two ways. Two atoms can share electrons to form a covalent bond, or an atom can give/take electrons from another atom to form an ionic bond.

Answer 7

When atoms gain, lose, or share electrons an attraction forms between the atoms, pulling them together in a compound. This attraction is a chemical bond.

Answer 8

They are formed to attain a balance octet configuration

Answer 9

By electrical attraction (ionic bonds) or by sharing of electrons (covalent bonds).

Answer 10

through transferring or sharing electrons