Answer:
Half-life of uranium-238 [tex]18 \times 10^{3} \text { times greater }[/tex] that of uranium-234
Explanation:
Half time of uranium-238 = [tex]4.5\times 10^9[/tex] years
Half time of Uranium-234 = [tex]2.5\times 10^5[/tex] years
To find how much times greater the half life of uranium-238 is from uranium-234
= [tex]\frac{\text { Half life of Uranium-238 }}{\text { Half time of Uranium - 234 }}[/tex]
=[tex]\frac{4.5 \times 10^{9}}{2.5 \times 10^{5}}[/tex]
=[tex]18 \times 10^{3} \text { times greater }[/tex]
Hence Uranium-238 is [tex]18 \times 10^{3} \text { times greater }[/tex] than Uranium-234
