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Which element is the primary constituent of Earth's solid... | QuestionStock

Representative image for question: Which element is the primary constituent of Earth's solid inner core?

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Science

Which element is the primary constituent of Earth's solid inner core?

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Which element is the primary constituent of Earth's solid inner core?

Options:

Iron
Nickel
Oxygen
Silicon

Correct answer: Iron

Explanation: Seismic data indicate Earth's inner core is mainly iron (with some nickel); the solid inner core sits beneath ~5150 km depth and has an approximate radius of 1,220 km.

Created 2026-03-10T17:33:47.266Z. Updated 2026-03-10T17:33:47.266Z.