About 378,000 years after the Big Bang. For more details, check the Wikipedia article on "Recombination (cosmology)".
Molecules did not exist at the time of the Big Bang and not even in the immediate time after. To make molecules one needs atoms but it took about 370.000 years after the Big Bang for the temperature had dropped enough for atoms to be stable.
More stable
Atoms combine with other atoms to form compound. It makes the atoms stable.
chemical bonds
In order to fill their outer most shells and become more stable atoms form BONDS.
atoms are generally unstable. they combine to form stable molecules
nitrogen atoms join up to form nitrogen molecules becoz their outermost shell is not stable. to be stable, they join up to form nitrogen molecues... ;)
Without atoms "bonding" together, there would be no universe. With no universe there would be no Earth. No Earth = No You, and therefore No You = No Question. Atoms bond together to form matter. Without this bond, we simply would not exist.
No. They combine when the compound is more stable. Any system will tend to go toward a more stable state. If a molecule is less stable than the individual atoms there is a good chance it will fall apart.
Phosphorus will typically form P4 molecules, where four phosphorus atoms are covalently bonded together in a tetrahedral structure, to become stable. This molecular form is stable and less reactive compared to its individual phosphorus atoms.
no. if the atom is stable it does not need to form any more compounds
Each element can form stable, less stable or unstable compounds.