Lithium is represented by Li ad the atomic number is 3. It is silver white metal and is the lightest metal andd least dense solid metal.
How many grams of lithium contains the same number of atoms as
2.50 megagrams of promethium?
The units of resistivity don't come out right.
10^-8 Ohm * m
m Ohm * cm
the 'm' should be a 'mu', but unfortunately they both look the same in the latin alphabet.