An electron's mass is about a rontogram, not a quectogram. (A bit confusing since most sources list electron mass as 9x10^-31 kilograms, rather than 9x10^-28 g

An electron's mass is about a rontogram, not a quectogram. (A bit confusing since most sources list electron mass as 9x10^-31 kilograms, rather than 9x10^-28 grams.)