Which value is a typical size of an atom?
0.0000001 m0.0000001\ \mathrm{m}0.0000001 m
0.1 m0.1\ \mathrm{m}0.1 m
0.0000000001 m0.0000000001\ \mathrm{m}0.0000000001 m
0.0001 m0.0001\ \mathrm{m}0.0001 m