Download 1. Which sublevel is filled immediately before the 5p orbital? a. 4s b

1. Which sublevel is filled immediately before the 5p orbital?
a. 4s
b. 6s
c. 4d
d. 4p
2. Which of the following elements have 3 valence electrons?
a. Al
b. Kr
c. Cl
d. Na
3. Elements that have characteristics of both metals and nonmetals are called:
a. solids.
b. metalloids.
c. middle metals.
4. The lowest energy state of an atom is called the:
a. ground state
b. independent state
c. excited state
d. distributional state
5. What is the electron configuration for gallium, with atomic number = 31?
a. 1s22s22p63s23p64s23d104p1
b. 1s22s22p63s23p64s24p65s25p3
c. 1s22s22p63s23p64s24p65s15p2
d. 1s22s22p63s23p64s24p6
6.
7. Atomic size generally decreases across a period.
True
False
8. The distance between corresponding points on a wave is the wave’s:
a. speed
b. frequency
c. wavelength
d. velocity
9. Quanta of light are called:
a. charms
b. excitons
c. photons
d. muons
10. What is the maximum number of orbitals in the p sublevel?
a. 3
b. 2
c. 6
d. 4
11. Electromagnetic frequencies are inversely proportional to wavelength.
True
False
12. Bohr’s model of the atom works only for hydrogen.
True
False
13. The color of light emitted by an atom heated in a flame is due to what?
a. Black-body radiation.
b. Some electrons in the atom going from higher to lower energy levels.
c. The metal reacting with oxygen.
d. Some electrons in the atom going from lower to higher energy levels.
e. The atom ionizing.
14. The Aufbau Principle states that:
a. electrons must have four quantum numbers.
b. electrons will fill available orbitals from lowest to highest energy.
c. electrons must have parallel spins in different orbitals.
d. electrons are affected by nuclear shielding.
15. An orbital is considered by modern chemists to be
a. a spherical or dumbbell shaped path which is followed the electron.
b. a precise region in space which is completely filled by the volume of the electron.
c. none of these
d. an elliptical path, outside the nucleus, followed by the electron.
e. a region in space in which the probability of finding the electron is high.
16. A particular neutral atom contains 11 electrons and 12 neutrons. What is its mass number?
a. none of these
b. 23
c. 11
d. 132
e. 12
17. A column on the periodic table is called a:
a. distribution
b. period
c. group
18. As the number of energy levels increases, the atomic size increases.
True
False
19. The modern periodic table is arranged in order of increasing:
a. atomic number
b. atomic mass
c. atomic radius
20. Higher energy levels are further from the nucleus in the Bohr model.
True
False
21. Which of the following orbitals is spherical in shape?
a. 5f
b. 4d
c. 3s
d. 2p
22. The amount of energy required to remove an electron from a neutral atom is
called:
a. electron affinity.
b. atomic radius
c. ionization energy
23. Atoms of an element that have different numbers of neutrons, and
consequently, different masses are called:
a. nucleons.
b. quanta.
c. ions.
d. isotopes.
24. The orbital shaped like a “dumb-bell” is:
a. s
b. f
c. d
d. p
25. What is the lowest energy level that has a ”d” sub-level?
a. 4
b. 2
c. 1
d. 5
e. 3
26. A neutral atom has a mass number of 45 and an atomic number of 21. Which of the following
is true?
a. The number of neutrons is 21.
b. The numbers of protons and neutrons are not the same.
c. The number of protons is 24.
d. The number of electrons is equal to the number of neutrons.
e. The number of electrons is 24.
27. Which of the following designates the sublevels that exist in energy level 2?
a. s
b. s, p, d
c. s, p, d, f
d. s, p
28. Elements in the same column of the periodic table:
a. have the same principal quantum number.
b. have high – energy electrons.
c. have the same atomic number.
d. have the same number of valence electrons.
29. The ionization energies are greater with increasing atomic size in a chemical group.
True
False
30. Group 8A elements have completely filled valence shell consisting of:
a. 2 electrons in a s sublevel and 3 electrons in a p sublevel electrons.
b. 2 electrons in an s sublevel and 6 electrons in a p sublevel electrons.
c. 0 electrons in an s sublevel and 8 electrons in a p sublevel electrons.
d. 2 electrons in an s sublevel and 8 electrons in a p sublevel electrons.
31. Quantum theory explains or enables predictions of all EXCEPT one of the following
characteristics of atoms. Identify the exception.
a. The specific energy levels the electron can occupy.
b. The frequency of light emitted by gaseous atoms.
c. The path or trajectory of the electron in the electron cloud.
d. The probability of an electron being in a given unit of volume at any instant.
e. The general shape of the electron orbitals.
32. A row on the periodic table is called a:
a. family
b. distribution
c. period
33. The word ”duality” has a primary place in quantum mechanics. What two concepts are
referred to in the term ”duality”?
a. waves and particles
b. time and space
c. none of these
d. liquids and solids
e. kinetic and potential energy
34. The element astatine At is in the:
a. d sublevel block
b. f sublevel block
c. p sublevel block
d. s sublevel block
35. The regions of electromagnetic radiation in descending order of energy values is:
a. X-rays, radio waves, visible light, ultraviolet
b. gamma rays, ultraviolet, visible light, infrared
c. radio waves, infrared, visible light, X-rays
d. visible light, ultraviolet, infrared, microwaves
36. Emission spectra display only specific lines of different colors:
a. because white light is the combination of all light frequencies
b. because these lines correspond to allowable energy level transitions
c. due to electrostatic attraction
d. because these lines are in different regions of the electromagnetic spectrum
37. Which of the following elements is a member of the Halogen family?
a. He
b. Ne
c. Mg
d. Br
38. Which of the following elements has an electron distribution ending in s2p5?
a. In
b. He
c. F
d. K
39. The important discovery from Rutherford’s gold foil experiment was that
a. alpha particles pass through gold un-deflected because of the small size of the atom.
b. electrons are not attracted to positively charged alpha particles.
c. alpha particles are dense.
d. the volume occupied by an atom is largely empty space.
e. gold atoms allow alpha particles to pass through.
40. Atomic size is difficult to measure because:
a. electron probability is hard to calculate.
b. the number of valence electrons varies with chemical families.
c. there is so much variation in the periodic table.
d. there is no well-defined edge to the electron probability cloud.
41. The row in which an element is found in the periodic table corresponds to:
a. the number of valence electrons.
b. the number of unpaired electrons.
c. the number of electrons in p orbitals.
d. the energy level of its valence electrons.
42. The Greek philosopher ______ was the first to suggest the existence of
atoms.
a. Plato
b. Galileo
c. Aristotle
d. Democritus
43. A certain element commonly has 8 protons, 8 neutrons, and 8 electrons. Choose the
following particle that would denote an isotope of this element.
a. 8 protons, 10 neutrons, 8 electrons
b. 10 protons, 10 neutrons, 8 electrons
c. 8 protons, 8 neutrons, 4 electrons
d. 10 protons, 8 neutrons, 8 electrons
e. 4 protons, 4 neutrons, 4 electrons
44. The diagonal rule states that electrons fill orbital’s in order of principal quantum number.
True
False
45. Which of the following elements is a metal?
a. Ca
b. He
c. F
d. H
46. Name the scientist who arranged the elements in order of increasing atomic
mass.
a. Bohr
b. Mendeleev
c. Mosley
d. Democritus
47. Which of the following elements has the largest atomic radius?
a. N
b. C
c. B
48. Protons and neutrons have:
a. the same charge but different masses.
b. different charges and different masses.
c. the same charge and the same mass.
d. different charges but the same mass.
49. Which sublevel is filled after the 6s orbital?
a. 4f
b. 4d
c. 6p
d. 5d
50. How many valence electrons does tellurium have?
a. 2
b. 6
c. 16
d. 52
e. 4
51. Noble gases are inert because their s and p sublevels are filled.
True
False
52. Which of the following elements is a gas at room temperature?
a. Na
b. Hg
c. Fe
d. H
53. The atomic number of an element is determined by each atom’s number of:
a. neutrons
b. protons
c. electrons
d. nucleons
54. An element with 2 electrons in its outer s energy level and 5 electrons in its outer p energy
level would be found in:
a. Group 2A
b. Group 1A
c. Group 5A
d. Group 7A