- 1. The elements of which of these groups on the periodic table are most resistant to forming compounds?
A) Group 18
B) Group 9
C) Group 14
D) Group 1
- 2. Which family of elements is most likely to donate two electrons?
A) alkaline earth metals
B) noble gases
C) halogens
D) alkali metals
- 3. According to the periodic table, which of these elements will form an ion with a –2 charge?
A) oxygen
B) calcium
C) chlorine
D) sodium
- 4. The bonding characteristics of sodium are most similar to the bonding characteristics of —
A) rubidium
B) magnesium
C) oxygen
D) carbon
- 5. The elements shown above referred to as the iron triad. What unique physical property is shared by the elements of this triad?
A) They are only form covalent compounds with other metals
B) They all exist in the gaseous phase at room temperature
C) The ability to be formed into permanent magnets
D) They all have densities lower than water allowing them to float
- 6. According to the periodic table, which of these elements will form an ion with a +1 charge?
A) Mg
B) Li
C) Br
D) S
- 7. Throughout history, scientists from all over the world have contributed to our current understanding of the matter and energy that fills the universe. Which of the following scientists is credited with the development of the modern periodic table?
A) Albert Einstein (German-American)
B) Antoine Lavoisier (French)
C) John Dalton (English)
D) Dmitiri Mendeleev (Russian)
- 8. Rows on the periodic table are referred to as periods. Which of the following do all of the elements in a period have in common?
A) Number of energy levels
B) Number of protons
C) Atomic radius
D) Number of valence electrons
- 9. Which of the following Lewis dot diagrams shows an accurate representation of potassium?
A) a
B) d
C) b
D) c
- 10. Which of the following atomic models correctly represents an atom of the element boron in its uncharged atomic state?
A) a
B) c
C) d
D) b
- 11. Which of the following sets of elements does not contain members with similar chemical reactivity?
A) Br, F, I
B) B, N, F
C) Co, Rh, Ir
D) Be, Ca, Ba
- 12. Which of the following groups contains members with similar chemical reactivity?
A) Mg, Ca, Sr
B) K, Ca, Sc
C) Na, K, Ca
D) C, N, O
- 13. According to the periodic table of the elements, how many valence electrons are present in an atom of nitrogen?
A) 5
B) 15
C) 14
D) 7
- 14. Which of these elements is most likely to gain two electrons?
A) O
B) Mg
C) Cl
D) Ca
- 15. The elements from which of the following groups are most likely to react with magnesium (Mg)?
A) Group 16
B) Group 1
C) Group 2
D) Group 18
- 16. What is the ground state electron configuration of scandium?
A) [Ar] 4s2 4p1
B) [Ar] 4s2 4d1
C) [Ar] 4s2 3p1
D) [Ar] 4s2 3d1
- 17. In which model of the periodic table does the shaded area show the location of elements that require the least energy to lose one electron?
A) d
B) c
C) b
D) a
- 18. Which of the following numbers would complete the ground state electron configuration of vanadium shown above?
A) 4
B) 3
C) 2
D) 5
- 19. Which of the following is the correct noble gas configuration for selenium in its ground state?
A) [Xe] 4s2 3d10 4p4
B) [Ne] 4s2 3d10 4p4
C) [Kr] 4s2 3d10 4p4
D) [Ar] 4s2 3d10 4p4
- 20. What element is represented by the ground state electron configuration shown above?
A) Copper
B) Nickel
C) Rhodium
D) Palladium
- 21. Which periodic table shown below represents the predicted trend associated with atomic radii? The arrows point in the direction from lowest (-) to greatest (+).
A) b
B) c
C) d
D) a
- 22. Which of the following elements has the greatest electronegativity?
A) Krypton
B) Sulfur
C) Phosphorous
D) Bromine
- 23. Which of the following has the smallest atomic radius?
A) Aluminum
B) Chlorine
C) Sulfur
D) Sodium
- 24. Which of the following elements requires the least amount of energy to remove one electron from its outer energy level?
A) Strontium
B) Oxygen
C) Barium
D) Fluorine
- 25. Which of the following elements would decrease in size when it became an ion?
A) Lead
B) Sulfur
C) Carbon
D) Silicon
- 26. Early chemists began to look for patterns and group elements in attempts to find what was eventually named the periodic law. The development of this idea led to the creation of the periodic table. This pursuit began because scientists observed which of the following?
A) Some elements have very similar properties to others
B) Most elements exist in the solid state at room temperature
C) Most important compounds from living things contain carbon
D) Oxygen tends to be a very reactive gaseous substance
- 27. Which of these describes a tendency for atomic radii as displayed on the periodic chart?
A) Atomic radii decrease left to right across a period.
B) Atomic radii increase left to right across a period.
C) Atomic radii decrease top to bottom down a group.
D) Atomic radii increase, then decrease from top to bottom down a group.
- 28. Which of the groups below has the electron dot structure shown?
A) Halogens
B) Transition elements
C) Noble gases
D) Alkali metals
- 29. An element has an electron configuration of 1s22s22p63s2. Which of these will be in the same group as this element?
A) 1s22s22p63s23p64s2
B) 1s22s22p6
C) 1s22s22p63s1
D) 1s22s22p63s23p6
- 30. The alkali metals are located in which group of the periodic table?
A) 18
B) 2
C) 1
D) 17
- 31. Which of these elements contains four valence electrons?
A) Carbon
B) Oxygen
C) Helium
D) Beryllium
- 32. Which of the following properties decreases from left to right across a period?
A) Electronegativity
B) Atomic number
C) Atomic radius
D) Ionization energy
- 33. What is the correct Lewis dot structure for arsenic?
A) a
B) c
C) b
D) d
- 34. The elements that are characterized by the presence of an incomplete d sublevel are called —
A) halogens
B) alkali earth metals
C) transition elements
D) lanthanoids
- 35. Which element is a noble gas?
A) Hydrogen (H)
B) Fluorine (F)
C) Xenon (Xe)
D) Nitrogen (N)
- 36. Which periodic table shown below represents the predicted trend associated with electronegativity? The arrows point in the direction from lowest (-) to greatest (+).
A) c
B) a
C) b
D) d
- 37. Which of these elements is most likely to donate one electron?
A) Cs
B) Be
C) He
D) Rn
- 38. What is the name of the shaded region in the diagram of the periodic table shown above?
A) Metalloids
B) Noble Gases
C) Transition Metals
D) Halogens
- 39. According to the periodic table, which of these elements will form an ion with a –2 charge?
A) S
B) F
C) Mg
D) Rb
- 40. Which of the following Lewis dot diagrams shows an accurate representation of sulfur with its valence electrons?
A) a
B) b
C) c
D) d
- 41. Which of the following shows a correct Lewis dot structure?
A) d
B) a
C) c
D) b
- 42. Which of these statements is an accurate description of the ionization energies of elements in the periodic table?
A) The ionization energy of krypton is greater than that of neon.
B) The ionization energy of lithium is greater than that of potassium.
C) The ionization energy of iodine is greater than that of fluorine.
D) The ionization energy of magnesium is greater than that of sulfur.
- 43. What is the electron configuration for an atom of germanium at ground state?
A) [Ar]4s24d104p2
B) [Ar]4s23d104p2
C) [Kr]4s23d104p2
D) [Kr]4s24d104p2
- 44. These elements most likely belong to which group?
A) Alkaline earth metals
B) Halogens
C) Alkali metals
D) Noble gases
- 45. Data for the atomic radii and ionization energies of elements in Group 1 are shown above. Which statement regarding these elements is supported by this information?
A) Elements with small atomic radii easily gain electrons.
B) Electrons are lost from the inner energy levels first.
C) Electrons closer to the nucleus require more energy to remove.
D) Elements with greater atomic mass require more ionization energy.
- 46. What is the ground state electron configuration of titanium?
A) [Ar] 4s2 3d10 4p3
B) [Ar] 4s2 3d4
C) [Ar] 4s2 3d10 4p2
D) [Ar] 4s2 3d2
- 47. What is the electron configuration of a potassium atom at ground state?
A) 1s22s22p63s23p63d1
B) 1s22s22p63s23p64d1
C) 1s1s22s22p63s23p64s1
D) 1s22s22d63s23d64s1
- 48. The bonding characteristics of strontium are most similar to the bonding characteristics of —
A) silicon
B) sulfur
C) calcium
D) rubidium
- 49. According to the periodic table, which of these elements will form an ion with a –1 charge?
A) Barium
B) Oxygen
C) Phosphorous
D) Bromine
- 50. According to the periodic table of the elements, how many valence electrons are present in an atom of phosphorous?
A) 16
B) 15
C) 31
D) 5
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