Categories Jokes I heard that the first date with potassium that oxygen went to turned out fine. The second time that oxygen went on a date with potassium was OK2 Post author By chemistryjokes Post date November 23, 2021 See also Oxygen Went Out On A Date With Potassium ← Chlorine came to sodium and told her, “You complete me!” → The entire class decided to bunk the chemistry class but owing to low attendance, I couldn’t afford to mass it!