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Science and technology

Why some chemical elements are rare in the earth’s crust and the factors involved

Why some chemical elements are rare in the earth’s crust and the factors involved

Understanding Rarity in the Earth’s CrustThe Earth’s crust is composed predominantly of oxygen, silicon, aluminum, iron, calcium, sodium, potassium, and magnesium. Together, these eight elements account for more than 98% of its mass. By contrast, a small group of elements exists ...