Description : What percentage of the earths outer core is iron?
Last Answer : We do not know exactly because there is no way to get to it itfind out. We know the outer core composed mainly of a nickel-ironalloy.We believe that the composition of Iron meteorites must ... these rangesfrom 5% to 62% nickel from meteorite to meteorite with an averageof 5% nickel leaving 95% Iron.