Isolate copper, in contact with fluorine repeatedly (3,3)
Guardian
Cryptic
#29499
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3 Down
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2024-09-27
Generating...
I haven't cracked this one yet — but the brilliant team at Fifteensquared have:
CU(symbol for the chemical element, copper) + TO(in contact with/attached) F,F(twice/ repeatedly , symbol for the chemical element, fluorine).