In 1939, only ------ naturally occurring elements had been discovered.
a. 89
b. 88
c. 98
d. 78
The heaviest elements are created in ----?
a. Annona
b. Type I Supernova
c. Supernova
d. Type II supernova
a. 89
b. 88
c. 98
d. 78
The heaviest elements are created in ----?
a. Annona
b. Type I Supernova
c. Supernova
d. Type II supernova
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Answer:
A. 89
thats what I know when Im in high school