And oxygen has two oxygen atoms together joined by a bond and it splits them apart and makes this thing called a free radical that has a lone electron.
At ang oxygen ay dalawang atoms ng oxygen magkasama sumali sa pamamagitan ng isang bono at ito ay splits sa kanila magkahiwalay at gumagawa ng bagay na ito na tinatawag na isang libreng radikal na may iisa elektron.