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The most abundant gas in the Sun is hydrogen.
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The most abundant gas in the Sun is hydrogen, making up about 75% of its mass. Helium is the second most abundant gas in the Sun, accounting for about 24% of its mass.
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The most abundant gas in the Sun is hydrogen. Approximately 75% of the Sun's mass consists of hydrogen. Helium is the next most abundant gas in the Sun, making up about 24% of its mass. Other elements such as oxygen, carbon, neon, and iron make up a very small fraction of the Sun's composition. However, hydrogen and helium dominate the Sun's overall composition by a significant margin.

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