Question

a hydrogen atom has adiameter of about 10nm a) express its diameter in millimeters b) express this diameter in micrometers

Answer 1

I see that there are 1 million nanometers in one millimeter, and there are one thousand nanometers in one micrometer. Use these conversion factors to solve.

Answer 2

1 mm = \(\large 10^{-3}\) m
1 nm = \(\large 10^{-9}\) m
divide:
1 mm / 1 nm = \(\large 10^{-3} / 10^{-9} = 10^{-3+9} = 10^6\)
1 mm = \(\large 10^6 \) nm
or
1 nm = \(\large 10^{-6} \) mm