'The fissionable 235 isotope makes up less than 1% of this metal in nature'
uranium
METALS: The fissionable 235 isotope makes up less than 1% of this metal in nature
The fissionable 235 isotope makes up less than 1% of this metal in nature
The fissionable 235 isotope makes up less than 1% of this metal in nature
METALS
uranium
METALS