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The diagram below represents the bright-line spectra of four elements and a bright-line spectrum produced by a mixture of three of these elements.

Can someone help me with this one? I dont understand that at all :(

The diagram below represents the brightline spectra of four elements and a brightline spectrum produced by a mixture of three of these elementsCan someone help class=


Answer :

Scryt
If wavelength of an element isn't marked on wavelength of mixture, it means that this element isn't part of it.
I also attached picture to make it more clear
I hope you will understand it, and oh btw the answer is element X (answer number 3)

View image Scryt

Answer: The correct answer is 3) X