An unidentified gas X when heated, is found to radiate light of wavelengths 423 nm, 520 nm, and 640 nm. In another situation, after white light was passed through a cooled sample of gas X, certain wavelengths were found missing. The missing wavelengths could be -

An unidentified gas X when heated, is found to radiate light of wavele

1.	An unidentified gas X when heated, is found to radiate light of wavelengths 423 nm, 520 nm, and 640 nm. In another situation, after white light was passed through a cooled sample of gas X, certain wavelengths were found missing. The missing wavelengths could be -
Answer» An unidentified gas X when heated, is found to radiate light of wavelengths 423 nm, 520 nm, and 640 nm. In another situation, after white light was passed through a cooled sample of gas X, certain wavelengths were found missing. The missing wavelengths could be -

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An unidentified gas X when heated, is found to radiate light of wavelengths 423 nm, 520 nm, and 640 nm. In another situation, after white light was passed through a cooled sample of gas X, certain wavelengths were found missing. The missing wavelengths could be -

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