AP MCQ 01EFGH PART 1 Question 01: If a photon has frequency = 2.00 x 1014 s-1 and the speed of light = 3.00 x 108 ms-1, then what is its wavelength? 1.5 nm 1500 m 1500 nm 6.00 x 1022 m Question 02: Which element will the most likely ion of sulfur, be isoelectronic with? Ne Ar Cl P Question 03: The PES spectrum for magnesium atoms will show how many peaks, and in what ratio of heights? 3 peaks; ratio, 1:1:1 3 peaks; ratio, 2:8:2 (or 1:4:1) 4 peaks; ratio, 1:1:1:1 4 peaks; ratio, 1:1:3:1 Question 04: How many occupied outer shell orbitals does an arsenic (atomic number 33) atom possess? 3 4 5 9 Question 05: It is found that a mixture of the elements with atomic numbers 5 through 9 inclusive, produce a PES plot where the peaks representing the 1s sub-shell of each element, all have different heights. What is the best explanation for this observation? Boron, carbon, nitrogen, oxygen and fluorine all have different numbers of protons Boron, carbon, nitrogen, oxygen and fluorine all have different total numbers of electrons Boron, carbon, nitrogen, oxygen and fluorine all have different numbers of electrons in their 1s sub-shell Boron, carbon, nitrogen, oxygen and fluorine must have been present in different abundances in the mixture Question 06: The electronic configuration of Fe3+ is? [Ar] 4s2 3d3 [Ar] 4s1 3d4 [Ar] 4s0 3d6 [Ar] 4s0 3d5 Questions 07-09: Questions 7-9 concern the simulated PES plots of oxygen and neon that are superimposed upon one another in the diagram below. Pink peaks represent neon, blue peaks represent oxygen. Question 07: What is the best explanation for each pink peak, being to the left of the corresponding blue peak in each case? Neon has more electrons than oxygen Neon has more protons than oxygen Oxygen has electrons paired in the p-orbitals Oxygen has the outer electronic configuration p4 Question 08: Which of pink peaks represents an electron that will be removed during the following process? Ne(g) → Ne+(g) + e- The pink peak farthest to the left on the x-axis The middle pink peak on the x-axis The pink peak farthest to the right on the x-axis It could be any of the pink peaks on the x-axis Question 09: If a third set of peaks were to be superimposed on to the same plot, this time for the PES spectrum for sodium, what would one expect to observe? An additional 3 peaks, each peak being to the right of the corresponding neon peak An additional 3 peaks, each peak being to the left of the corresponding neon peak An additional 4 peaks, with 3 of them being to the left of the corresponding neon peak and one being to the right of all of the original peaks An additional 4 peaks, with 3 of them being to the right of the corresponding neon peak and one being to the left of all of the original peaks Question 10: Which electron transition would release the greatest amount of energy? From n = 1 to n = 3 From n = 1 to n = 4 From n = 5 to n = 4 From n = 2 to n = 1 Δ
