<P> The mass of the Earth is approximately 5.98 × 10 kg . In bulk , by mass , it is composed mostly of iron ( 32.1 % ) , oxygen ( 30.1 % ) , silicon ( 15.1 % ) , magnesium ( 13.9 % ) , sulfur ( 2.9 % ) , nickel ( 1.8 % ) , calcium ( 1.5 % ) , and aluminium ( 1.4 % ) ; with the remaining 1.2 % consisting of trace amounts of other elements . </P>
<P> The mass of the Earth is approximately 5.98 × 10 kg . In bulk , by mass , it is composed mostly of iron ( 32.1 % ) , oxygen ( 30.1 % ) , silicon ( 15.1 % ) , magnesium ( 13.9 % ) , sulfur ( 2.9 % ) , nickel ( 1.8 % ) , calcium ( 1.5 % ) , and aluminium ( 1.4 % ) ; with the remaining 1.2 % consisting of trace amounts of other elements . </P>
what is the most abundant chemical on earth
what is the most abundant chemical on earth
iron
iron