January 2020 NY Regents Chemistry Exam
49 The diagram below represents the bright-line spectra of four elements and a bright-line spectrum produced by an unidentified element.
What is the unidentified element?
L
M
X
Z
Solution: To identify the unknown element we have to match the lines of the unidentified element to the lines above it and see what element these lines belong to.
Answer: 1
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