Question

1. the diagram to the left represents the emission spectra of four elements and a mixture of two of these. according to the data, what elements are found in the mixture? clear all hydrogen and helium hydrogen and lithium barium and lithium barium and helium

Explanation:

Step1: Identify unique spectral lines

Each element has a unique emission - spectrum pattern. Compare the spectral lines of the mixture with those of individual elements.

Step2: Match lines to elements

The spectral lines of the mixture that match the lines of specific elements indicate the presence of those elements. The lines in the mixture's spectrum match the lines of hydrogen and lithium.

Answer:

Hydrogen and Lithium