rock | 0.60 |
soil | 0.47 |
small amounts | 0.44 |
water | 0.38 |
fluorosilicic acid | 0.26 |
phosphate rock | 0.25 |
sample | 0.09 |
drop on hiroshima | 0.50 |
occur in the earth's cr… | 0.50 |
give atomic weapons | 0.49 |
occur in differing forms | 0.46 |
occur in seawater | 0.39 |
give off energy | 0.38 |
undergo fission | 0.37 |
become in last fifty ye… | 0.35 |
absorb neutron | 0.33 |
remain in the ground | 0.33 |
More » |
some forms of cancer | 0.36 |
92 protons | 0.53 |
fissionable isotope | 0.49 |
atomic number of 92 | 0.25 |
a chemical element | 0.56 |
metal | 0.45 |
common metal | 0.40 |
heavy metal | 0.40 |
fissile | 0.28 |
highest-numbered element | 0.26 |
51st element | 0.25 |
mined | 0.75 |
enriched | 0.73 |
removed | 0.67 |
found as uranium-238 | 0.63 |
mined in the united sta… | 0.60 |
used as fuel | 0.56 |
used by nuclear power p… | 0.51 |
found on earth | 0.49 |
separated | 0.49 |
imported | 0.49 |
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water fluoridation | 0.20 |