Passage I
X-ray spectroscopy is a way of analyzing a mineral's composition. When an electron beam is directed onto a mineral, each element in the mineral emits characteristic X-rays having a narrow range of energies. The intensity of all X-rays emitted by the elements is measured. The greater the maximum intensity of the X-rays emitted by an element, the greater the relative concentration of the element in the mineral.
Figures 1 and 2 show X-ray spectroscopy results for Mineral 1 and Mineral 2, respectively, under identical conditions. Energy is given in kiloelectron volts (keV); intensity is given in counts per second (sec).
1. Which of the following elements emitted X-rays that had the same maximum intensity in both minerals?
Your Answer is
Correct Answer is B
Explanation
Look at the ordinate intensity of emitted X-rays of figure 1 and figure 2, only the two ordinates of the Cr element are equal