Please help me hurry a lot of points

Answer:
The radius of mercury is 6 times larger than the radius of hydrogen and the radius of uranium is 7 times larger than the radius of hydrogen.
Step-by-step explanation:
For mercury,
[tex]Ratio=\frac{radius of Hg}{radius of H} \\=\frac{1.5e-10}{2.5e-11} \\=6[/tex]
For uranium,
[tex]Ratio=\frac{radius of U}{radius of H} \\=\frac{1.75e-10}{2.5e-11} \\=7[/tex]