front 1 1) Which one of the following is correct? A) ν + λ = c B) ν ÷ λ = c C) ν = cλ D) λ = c ν E) νλ = c | back 1 E) νλ = c |
front 2 2) Of the following, ________ radiation has the shortest wavelength. A) X-ray B) radio C) microwave D) ultraviolet E) infrared | back 2 A) X-ray |
front 3 3) The photoelectric effect is ________. A) the total reflection of light by metals giving them their typical luster B) the production of current by silicon solar cells when exposed to sunlight C) the ejection of electrons by a metal when struck with light of sufficient energy D) the darkening of photographic film when exposed to an electric field E) a relativistic effect | back 3 C) the ejection of electrons by a metal when struck with light of sufficient energy |
front 4 4) Which one of the following is considered to be ionizing radiation? A) visible light B) radio waves C) X-rays D) microwaves E) infrared radiation | back 4 C) X-rays |
front 5 5) Of the following transitions in the Bohr hydrogen atom, the ________ transition results in the emission of the lowest-energy photon. A) n = 1 → n = 6 B) n = 6 → n = 1 C) n = 6 → n = 3 D) n = 3 → n = 6 E) n = 1 → n = 4 | back 5 C) n = 6 → n = 3 |
front 6 6) In the Bohr model of the atom, ________. A) electrons travel in circular paths called orbitals B) electrons can have any energy C) electron energies are quantized D) electron paths are controlled by probability E) both A and C | back 6 C) electron energies are quantized |
front 7 7) According to the Heisenberg Uncertainty Principle, it is impossible to know precisely both the position and the ________ of an electron. A) mass B) color C) momentum D) shape E) charge | back 7 C) momentum |
front 8 8) All of the orbitals in a given electron shell have the same value as the ________ quantum number. A) principal B) angular momentum C) magnetic D) spin E) psi | back 8 A) principal |
front 9 9) The de Broglie wavelength of a ________ will have the shortest wavelength when traveling at 30 cm/s. A) marble B) car C) planet D) uranium atom E) hydrogen atom | back 9 C) planet |
front 10 10) The uncertainty principle states that ________. A) matter and energy are really the same thing B) it is impossible to know anything with certainty C) it is impossible to know the exact position and momentum of an electron D) there can only be one uncertain digit in a reported number E) it is impossible to know how many electrons there are in an atom | back 10 C) it is impossible to know the exact position and momentum of an electron |
front 11 11) All of the orbitals in a given subshell have the same value as the ________ quantum number. A) principal B) angular momentum C) magnetic D) A and B E) B and C | back 11 D) A and B |
front 12 12) Which one of the following is not a valid value for the magnetic quantum number of an electron in a 5d subshell? A) 2 B) 3 C) 0 D) 1 E) -1 | back 12 B) 3 |
front 13 13) Which of the subshells below do not exist due to the constraints upon the angular momentum quantum number? A) 2d B) 2s C) 2p D) all of the above E) none of the above | back 13 E) none of the above |
front 14 14) Which of the subshells below do not exist due to the constraints upon the angular momentum quantum number? A) 4f B) 4d C) 4p D) 4s E) none of the above | back 14 E) none of the above |
front 15 15) An electron cannot have the quantum numbers n = ________, l = ________, ml = ________. A) 2, 0, 0 B) 2, 1, -1 C) 3, 1, -1 D) 1, 1, 1 E) 3, 2, 1 | back 15 D) 1, 1, 1 |
front 16 16) An electron cannot have the quantum numbers n = ________, l = ________, ml = ________. A) 6, 1, 0 B) 3, 2, 3 C) 3, 2, -2 D) 1, 0, 0 E) 3, 2, 1 | back 16 B) 3, 2, 3 |
front 17 17) Which one of the following is an incorrect subshell notation? A) 4f B) 2d C) 3s D) 2p E) 3d | back 17 B) 2d |
front 18 18) Which one of the following is an incorrect orbital notation? A) 2s B) 3py C) 3f D) 4dxy E) 4s | back 18 C) 3f |
front 19 19) Which quantum number determines the energy of an electron in a hydrogen atom? A) n B) E C) ml D) l E) n and l | back 19 A) n |
front 20 20) Which one of the quantum numbers does not result from the solution of the Schrodinger equation? A) principal B) azimuthal C) magnetic D) spin E) angular momentum | back 20 D) spin |
front 21 21) Which quantum numbers must be the same for the orbitals that they designate to be degenerate in a one-electron system (such as hydrogen)? A) n, l, and ml B) n and l only C) l and ml D) ml only E) n only | back 21 E) n only |
front 22 22) In a px orbital, the subscript x denotes the ________. A) energy of the electron B) spin of the electrons C) probability of the shell D) size of the orbital E) axis along which the orbital is aligned | back 22 E) axis along which the orbital is aligned |
front 23 23) The ________ orbital is degenerate with 5py in a many-electron atom. A) 5s B) 5px C) 4py D) 5dxy E) 5d2 | back 23 B) 5px |
front 24 24) Which one of the following orbitals can hold two electrons? A) 2px B) 3s C) 4dxy D) all of the above E) none of the above | back 24 D) all of the above |
front 25 25) Which quantum numbers must be the same for the orbitals that they designate to be degenerate in a many-electron system? A) n, l, and ml B) n only C) n, l, ml, and ms D) ms only E) n and l only | back 25 E) n and l only |
front 26 26) Which of the following is not a valid set of four quantum numbers? (n, l, ml, ms) A) 2, 0, 0, +1/2 B) 2, 1, 0, -1/2 C) 3, 1, -1, -1/2 D) 1, 0, 0, +1/2 E) 1, 1, 0, +1/2 | back 26 A) 2, 0, 0, +1/2 |
front 27 27) Which of the following is a valid set of four quantum numbers?
(n, l, ml, ms) | back 27 A) 2, 1, 0, +1/2 |
front 28 31) The ground state electron configuration of Ga is ________. A) 1s22s23s23p64s23d104p1 B) 1s22s22p63s23p64s24d104p1 C) 1s22s22p63s23p64s23d104p1 D) 1s22s22p63s23p64s23d104d1 E) [Ar]4s23d11 | back 28 C) 1s22s22p63s23p64s23d104p1 |
front 29 32) The ground-state electron configuration of the element ________ is [Kr]5s14d5. A) Nb B) Mo C) Cr D) Mn E) Tc | back 29 B) Mo |
front 30 33) The ground-state electron configuration of ________ is [Ar]4s13d5. A) V B) Mn C) Fe D) Cr E) K | back 30 D) Cr |
front 31 34) Which one of the following configurations depicts an excited oxygen atom? A) 1s22s22p2 B) 1s22s22p23s2 C) 1s22s22p1 D) 1s22s22p4 E) [He]2s22p4 | back 31 B) 1s22s22p23s2 |
front 32 38) The ground-state configuration of fluorine is ________. A) [He]2s22p2 B) [He]2s22p3 C) [He]2s22p4 D) [He]22s22p5 E) [He]2s22p6 | back 32 D) [He]22s22p5 |
front 33 39) The lowest orbital energy is reached when the number of electrons with the same spin is maximized. This statement describes ________. A) Pauli Exclusion Principle B) Planck's constant C) deBroglie hypothesis D) Heisenberg Uncertainty Principle E) Hund's rule | back 33 E) Hund's rule |
front 34 40) Which of the following elements has a ground-state electron configuration different from the predicted one? A) Cu B) Ca C) Xe D) Cl E) Ti | back 34 A) Cu |
front 35 41) Which two elements have the same ground-state electron configuration? A) Pd and Pt B) Cu and Ag C) Fe and Cu D) Cl and Ar E) No two elements have the same ground-state electron configuration. | back 35 E) No two elements have the same ground-state electron configuration. |
front 36 42) How many different principal quantum numbers can be found in the ground-state electron configuration of nickel? A) 2 B) 3 C) 4 D) 5 E) 6 | back 36 C) 4 |
front 37 43) The valence shell of the element X contains 2 electrons in a 5s subshell. Below that shell, element X has a partially filled 4d subshell. What type of element is X? A) main group element B) chalcogen C) halogen D) transition metal E) alkali metal | back 37 D) transition metal |
front 38 44) Electromagnetic radiation travels through vacuum at a speed of ________ m/s. A) 186,000 B) 125 C) 3.00 × 108 D) 10,000 E) It depends on wavelength. | back 38 C) 3.00 × 108 |
front 39 45) The wavelength of light that has a frequency of 1.20 × 1013 s-1 is ________ m. A) 25.0 B) 2.50 × 10-5 C) 0.0400 D) 12.0 E) 2.5 | back 39 B) 2.50 × 10-5 |
front 40 46) The wavelength of light that has a frequency of 1.66 × 109 s-1 is ________ m. A) 0.181 B) 5.53 C) 2.00 × 10-9 D) 5.53 × 108 E) none of the above | back 40 A) 0.181 |
front 41 47) Ham radio operators often broadcast on the 6-meter band. The frequency of this electromagnetic radiation is ________ MHz. A) 500 B) 200 C) 50 D) 20 E) 2.0 | back 41 C) 50 |
front 42 48) The energy of a photon that has a wavelength of 8.33 × 10-6 m is ________ J. A) 2.20 × 10-26 B) 3.60 × 1013 C) 2.39 × 10-20 D) 2.7 × 109 E) 4.5 × 10-25 | back 42 C) 2.39 × 10-20 |
front 43 49) What color of visible light has the longest wavelength? A) blue B) violet C) red D) yellow E) green | back 43 C) red |
front 44 50) The energy (J) required for an electronic transition in a Bohr hydrogen atom from n = 2 to n = 3 is ________ J. A) 4.00 × 10-19 B) 3.00 × 10-19 C) -3.00 × 10-19 D) -7.90 × 10-19 E) 4.60 × 1014 | back 44 B) 3.00 × 10-19 |
front 45 51) The energy (J) required for an electronic transition in a Bohr hydrogen atom from n = 1 to n = 3 is ________ J. A) -8.90 × 10-1 B) 3.00 × 10-19 C) -3.00 × 10-19 D) 1.94 × 10-18 | back 45 D) 1.94 × 10-18 |