Question

A hydrogen atom has a diameter of about
10.1 nm.
Express this diameter in meters, millimeters, and micrometers.

Answer 1

10.1 nm =0.0000000101=1.01•10⁻⁸ m=
=1.01•10⁻ ⁵mm=1.01•10⁻ ²µm

Answer 2

What is the unit of time according to SI