Now, that's just wrong.
Bet she's still "hot".
Bet you're right. She died in 1934. Radium's most stable isotope has a 1600 year half-life, and that doesn't even consider polonium.
She will be "hot" long after all of us are pushing up daisies.
My kid and a couple of his buddies were debating hottest chick in history. I dropped Marie Curie on them. A year latter, in the middle of his college chemistry class, my son comes home all excited that he finally got it.
Joan of Arc would have given her some serious competition, but not for nearly as long.
Pew! Pew! Pew!