Atoms in a molecule stick together due to

Explanation:

So when due atoms bond/attach to one another its because there is an electrical force holding them together.When they come together they share electrons in the outer shell to form what we know at today bonds.The bonds that hold atoms together to form molecules are called covalent bonds. They are pretty tough and not easily made or broken apart. It takes energy to make the bonds and energy is released when the bonds are broken.