Explain non-radioactive elements are ruthenium and rhodium

Reference no: EM13213696

The Earth's surface area is 5.10x10^8 km^2, and it's crust has a mean thickness of 35km and mean density of 2.8 g/cm^3. The two most abundant elements in the crust are oxygen (4.55x10^5 g/metric ton, t) and silicon (2.72x10^5 g/t), and the two rarest non-radioactive elements are ruthenium and rhodium, each with an abundance of 1x10^-4 g/t. What is the total mass of each of these elements in the Earth's crust (1 t = 1000kg)?

Reference no: EM13213696

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