why do halogens tend to form diatomic molecules?
3 answers
The halogens have seven (7) electrons in their outer shell and they are more stable with eight. So two atoms come together, share a pair of electrons, and each becomes a noble gas structure.
Because each halogen atom is missing only one electron to fill its outer shell. Therefore two of them like to get toegther and share an electron, thereby both forming stable full outer shells.
preparing working solution of the disinfectant Osyl from the stock solution requires diluting the stock one part Osyl to five parts water .this is V/V solution .in this situation you have 250ml of water so the question is:HOW MUCH OSYL IS NEEDED?