i have beef with potassium because.WHY IS IT'S CHEMICAL SYMBOL K WHEN THE LETTER K IS NOWHERE NEAR IT'S NAME

i rarely post here anymore Sorry
i have beef with potassium because.WHY IS IT'S CHEMICAL SYMBOL K WHEN THE LETTER K IS NOWHERE NEAR IT'S NAME
https://www.youtube.com/watch?v=x4c9cmteFFQ
ok so. not only is this the unforgiving, where the marathon diff is the longest ranked beatmap .. being almost an hour long
it's being played with AR-∞, where all of the objects are ALWAYS visible
AND the skin has no numbers
AND IT'S AN FC ..