Krypton, Argon
Tin is an element that rhymes with chin.
Nickel is an element that rhymes with tickle.
The element that rhymes with "keen" is "tin."
Nothing rhymes with polygons. I don't know why but if you try you will not get real words.
phosphorous
tin
antimony
Phosphorus
The word "cobalt" rhymes with "proballt" and "snowballt."
The answer would be something scientific like "elephants"!!! JK>>
Gold.
agleamairstreambeambeseemblasphemebloodstreambreamcreamcremecrossbeamdaydreamdeemdownstreamdreamesteemextremegleaminseammainstreammidstreammillstreammoonbeammorphemephonemepipedreamracemereamredeemregimeschemescreamseamseemsteamstreamsunbeamsupremeteamteemthemeupstream