Multiple choice

70% of the sun is made up of which one of the following elements?

  1. oxygen

  2. helium

  3. hydrogen

  4. nitrogen
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The Sun is primarily composed of hydrogen, which makes up about 73% to 74% of its mass (often rounded to 70%). Helium is the second most abundant element, accounting for about 24% to 25% of its mass.

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