Eli5 what does the s,p,d and f stand for in atomic orbitals? Like is it short for something or is it like the p on pH lost in time?
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pH= potential Hyroogen. Water is mostly H2O molecules but a small part of it is H+ and OH- ions. The H+ ions are potentially H2 gas, e.g. in an electrolysis cell. pH is minus the log to base 10 of the hydrogen ion concentration (in gram ions per litre). Well that what I was taught 60 years ago, but I since learned that nowadays the definition has been replaced in terms of some measure of electric charge – almost exactly the same in numerical terms.
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