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D₃ line was observed along with D₁and D₂ in the solar spectrum. This denotes the presence of

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Xenon in chromosphere of sum

Neon in chromosphere of sum

Helium in chromosphere of sum

Arson in chromosphere of sum

answer is A.

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Detailed Solution

Along with D₁and D₂ lines in the solar spectrum, Frankland and Lockyer observed a new line in the solar spectrum and denoted it as D₃ line which was due to presence of element Helium.

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