Light Elements Like Hydrogen and Helium Form a Large Percentage

question 24

Multiple Choice

Light elements like hydrogen and helium form a large percentage of the outer planets and Sun is made up primarily of hydrogen.Why are these elements nearly absent from the inner planets?

• A)The Sun captured all of the hydrogen during its formation.
• B)These light elements are blown away from the inner planets by the solar wind.
• C)It is a mystery that has never been solved by science.
• D)Hydrogen and helium have all been bound up by chemical reactions on the inner planets and are held in rock.

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