Chapter 5 Multiple Choice Questions
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1 Chapter 5 Multiple Choice Questions 1. What is the wavelength of radiation that has a frequency of s 1? A m B nm C m D m E m 2. Calculate the frequency of visible light having a wavelength of nm. A /s B /s C /s D /s E /s 3. What is the energy in joules of a mole of photons associated with visible light of wavelength nm? A J B J C J D kj E. 246 kj 4. Complete this sentence: Atoms emit visible and ultraviolet light A. as electrons jump from lower energy levels to higher levels. B. as the atoms condense from a gas to a liquid. C. as electrons jump from higher energy levels to lower levels. D. as they are heated and the solid melts to form a liquid. E. as the electrons move about the atom within an orbit. 5. Calculate the frequency of the light emitted by a hydrogen atom during a transition of its electron from the n = 6 to the n = 3 principal energy level. Recall E n = J(1/n2) A /s B /s C /s D /s E /s Page 1
2 6. Which one of the following sets of quantum numbers is not possible? A /2 B /2 C /2 D /2 E /2 7. Which one of the following sets of quantum numbers is not possible? A /2 B /2 C /2 D /2 E /2 8. The maximum number of electrons in a atom that have the following set of quantum numbers is n = 4 l = + 3 m l = -2 m s = + 1/2 A. 0 B. 1 C. 2 D. 6 E A possible set of quantum numbers for the last electron added to complete an atom of gallium Ga in its ground state is A /2 B /2 C /2 D /2 E /2 10. Electrons in an orbital with l = 3 are in a/an A. d orbital. B. f orbital. C. g orbital. D. p orbital. E. s orbital. 11. The number of orbitals in a d subshell is A. 1 B. 2 C. 3 D. 5 E The maximum number of electrons that can occupy an energy level described by the principal quantum number, n, is A. n B. n + 1 C. 2n D. 2n2 E. n2 13. How many orbitals are allowed in a subshell if the angular momentum quantum number for electrons in that subshell is 3? A. 1 B. 3 C. 5 D. 7 E. 9 Page 2
3 14. "No two electrons in an atom can have the same four quantum numbers" is a statement called A. the Pauli exclusion principle. B. Bohr's equation. C. Hund's rule. D. De Broglie's relation. E. Dalton's atomic theory. 15. The orbital diagram for a ground state nitrogen atom is A. B. C. D. 16. The orbital diagram for a ground state oxygen atom is A. B. C. D. E. 17. The orbital diagram for a ground state carbon atom is A. B. C. D. 18. How many unpaired electrons does an atom of sulfur have? A. 0 B. 1 C. 2 D. 3 E Which element has the following electron configuration? [Kr]5s24d105p3 A. Sn B. Sb C. Pb D. Bi E. Te 20. Which element has the following electron configuration? [Kr]5s24d105p2 A. Sn B. Sb C. Pb D. Ge E. Te Page 3
4 21. The electron configuration of a ground state Co atom is A. [Ar]4s23d7 B. 1s22s22p63s23d9 C. [Ne]3s23d7 D. [Ar]4s13d5 E. [Ar]4s24d7 22. The electron configuration of a copper atom is A. [Ar]4s24d4 B. [Ar]4s24p63d3 C. [Ar]4s23d7 D. [Ar]3d9 E. [Ar]4s13d The ground state electron configuration for an atom of indium is A. [Kr]5s24p64d5 B. [Ar]4s23d104p1 C. [Ar]4s24p63d5 D. [Kr]5s25p64d5 E. [Kr]5s24d105p1 24. An atom of manganese has unpaired electrons and is. A. 0, diamagnetic B. 2, diamagnetic C. 3, paramagnetic D. 5, paramagnetic E. 7, paramagnetic 25. Transition metal elements have atoms or ions with partially filled A. s subshells. B. p subshells. C. d subshells. D. f subshells. E. g subshells. 26. Lanthanide or rare earth elements have atoms or ions with partially filled A. s subshells. B. p subshells. C. d subshells. D. f subshells. E. g subshells. Page 4
5 27. Which choice lists two elements with electron configurations that are well-known exceptions to the Aufbau principle? A. Cu and C B. Cr and Cu C. Cs and Cl D. Rb and Co E. Fe and Co True and False Questions 28. The Bohr model for the hydrogen atom found its best support from experimental work on the photoelectric effect. 29. An electron in a 3p orbital could have a value of 2 for its angular momentum quantum number A neon atom in its ground state will be diamagnetic. 31. Each shell (principal energy level) of quantum number n contains n subshells. 32. For all atoms of the same element, the 2s orbital is larger than the 1s orbital. 33. According to de Broglie's equation, the wavelength associated with the motion of a particle increases as the particle mass decreases. 34. The frequency of the emitted light from a cesium atom is an intensive property. Page 5
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Ch 9 Electrons in Atoms & the Periodic Table Study Sheet Acc. Chemistry SCANTRON Name /99 TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. 1) When the elements are arranged