scientists find missing element in earths core
Wednesday 23 July 2025
Last Updated : GMT 09:40:38
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Scientists Find Missing Element in Earth's Core

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Themuslimchronicle, themuslimchronicleScientists Find Missing Element in Earth's Core

Scientists Find Missing Element in Earth's Core
Tokyo - QNA

Japanese scientists believe they have established the identity of a "missing element" within the Earth's core.

    They have been searching for the element for decades, believing it makes up a significant proportion of our planet's center, after iron and nickel.

    Now by recreating the high temperatures and pressures found in the deep interior, experiments suggest the most likely candidate is silicon. The discovery could help us to better understand how our world formed.  "We believe that silicon is a major element, about 5% [of the Earth's inner core] by weight could be silicon dissolved into the iron-nickel alloys," Lead researcher Eiji Ohtani from the University of Tokyo told the (BBC). 

    The innermost part of our Earth is thought to be a solid ball with a radius of about 1,200km. It is far too deep to investigate directly, so instead scientists study how seismic waves pass through this region to tell them something of its make-up.

    It is mainly composed of iron, which makes up an estimated 85% of its weight, and nickel, which accounts for about 10% of the core. Add this together though and around 5% is unaccounted for.  To investigate, Eiji Ohtani and his team created alloys of iron and nickel and mixed them with silicon. They then subjected them to the immense pressures and temperatures that exist in the inner core. 

    They discovered that this mixture matched what was seen in the Earth's interior with seismic data. Prof Ohtani said more work was needed to confirm the presence of silicon and that it did not rule out the presence of other elements.

Source: QNA

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