Download Exam II Chem101 Spring 2021 1616504842843 sc

1. Similar chemical properties are a result of similar
A)
B)
C)
D)
E)
nuclear charge
physical properties
numbers of electron shells
numbers of valence electrons
number of neutrons
2. The elements with similar properties have atomic
numbers
A) 1, 2 and 3
C) 5, 6 and 7
E) 10, 18, 26
B) 1, 3 and 11
D) 13, 31 and 49
B) 2
A) Na
C) 3
D) 4
E) 5
4. Which element is correctly identified according to
family and period?
A)
B)
C)
D)
E)
Element 10 is a halogen in period 2
Element 11 is an alkaline earth metal in period 4
Element 17 is a halogen in period 3
Element 21 is a transition metal in period 3
Element 3 is a alkaline earth metal in period 1
5. An atom of element X has 11 protons and 12 neutrons
while an atom of element Y has 12 protons and 12
neutrons. X and Y are
A)
B)
C)
D)
E)
isotopes of the same element
allotropes of the same element
isomers of the same compound
metals in the same group of the Periodic Table
metals in the same row of the Periodic Table
6. The atoms and ions in order of increasing radius are
A) Ar; Ca 2+; Cl–; Cl.
C) Cl –; Ar; Ca2+; Cl.
E) Ca2+; Ar; Cl–; Cl.
A) Si ® P ® Cl shows increasing metallic
character
B) Li ® Na ® K shows decreasing metallic
character
C) C ® N ® O shows decreasing atomic radius
D) Ti, V, and Cr are nonmetals
E) Cl ® Br ® F shows decreasing electronegativity
9. Which has the largest metallic radius?
3. Which period in the periodic table contains the most
nonmetals ?
A) 1
8. Which is true regarding elements in the Periodic Table
in the sequence shown?
B) Ca2+; Ar; Cl; Cl–.
D) Cl; Cl–; Ar; Ca2+.
7. Which property steadily decreases across period 3
from left to right in the Periodic Table?
A) atomic size
B) atomic mass
C) ionization energy D) electron population
E) number of neutrons
B) Mg
C) Li
D) Be
E) Al
10. As the atomic numbers of the elements in a family
increase, the
A)
B)
C)
D)
E)
atomic radii increase
atomic masses decrease
ionization energies increase
elements become less metallic
number of electrons in the outermost energy
level increases
11. Which of the following species has the smallest
atomic radius?
A) chlorine
C) sodium
E) phosphorus
B) potassium
D) sulfur
12. Which of the following elements has the largest
atomic radius?
A) Sn
B) As
C) S
D) F
E) Sb
13. In the Periodic Table, the radii of atoms
A)
B)
C)
D)
E)
increase from bottom to top
increase from top to bottom
increase from left to right
do not change in a regular manner
changes according to the number of neutrons
14. Which of the following has the smallest ionic
radius?
A) Na+
B) Mg 2+ C) K+
D) Ca2+ E) Ba2+
15. Which element has an ionic radius that is smaller
than its atomic radius?
A) O
B) N
C) Cl
D) F
E) Al
16. An atom of a nonmetal generally becomes an ion by
A)
B)
C)
D)
E)
losing electrons
gaining electrons
losing protons
gaining neutrons
both losing protons and gaining electrons
17. In a given period of the periodic table, the element
with the highest ionization energy is always
A) a halogen
C) an alkali metal
E) a noble gas
B) a chalcogen
D) a transition metal
18. A low ionization energy is characteristic of a(n)
A) active metal
B) inactive metal
C) active nonmetal
D) inactive nonmetal
E) inactive noble gas
19. Base your answer to the following question on the
graph below. The graph is drawn of the first
ionization energies of 15 unknown elements is
prepared. Use just this ionization energy data to
answer the question.
20. As the atomic numbers of the elements in a group of
the Periodic Table increase, the
A)
B)
C)
D)
E)
atomic radii decrease
atomic masses decrease
ionization energies decrease
metallic characteristics decrease
electronegativities increase
21. Which element has the strongest attraction for
electrons?
A) calcium
C) hydrogen
E) francium
B) fluorine
D) sulfur
22. Which neutral atom will lose electrons easiest?
A) Cs
B) Na
C) F
D) Be
E) H
23. The decreased effect of the force of attraction of a
nucleus for valence electrons due to the presence of
intervening electrons is the
A)
B)
C)
D)
E)
periodic effect
shielding effect
electronegativity effect
first ionization energy effect
noble gas configuration effect
24. The amount of energy required to remove the most
loosely held electron from an atom is the
A)
B)
C)
D)
E)
nuclear charge
shielding effect
electronegativity
oxidation number
first ionization energy
25. The strength of an atom’s attraction for the electrons
in a chemical bond is the atom’s
A) electronegativity B) ionization energy
C) heat of reaction
D) heat of formation
E) none of the above
The element which has the highest ionization energy
is
A) cesium
C) hydrogen
E) fluorine
B) nitrogen
D) magnesium
26. The greater the electronegativity of an element, the
greater the tendency of the element to
A) gain electrons.
C) gain protons.
E) form cations.
B) lose electrons.
D) lose protons.
27. Which of the following elements has the highest
electronegativity?
A) B
B) C
C) N
D) O
E) P
28. The electronegativity of elements is generally greater
for
A) tin
C) carbon
E) arsenic
29. The metal that most readily loses electrons is
11Na
B)
19K
C)
37Rb
D)
40Zr
E)
55Cs
31. How many atoms are in a molecule of helium?
A) 1
B) 2
C) 3
D) 4
E) None of the above
32. Which element exists as a gaseous monatomic
molecule at STP?
A) iodine
C) nitrogen
E) hydrogen
B) magnesium
D) krypton
33. Which properties are most common in nonmetals?
A) low ionization energy and low electronegativity
B) low ionization energy and high
electronegativity
C) high ionization energy and low
electronegativity
D) high ionization energy and high
electronegativity
E) nonmetals may have any of these properties
34. Which list consists entirely of diatomic molecules
under normal room conditions?
A)
B)
C)
D)
E)
B) bi–metals
D) semi–solids
B) neon
D) copper
37. The most colorful solids are the
B) copper
D) tin
30. Which of these elements is the least metallic?
A)
A) atoms
C) metalloids
E) semiconductors
36. Which element is a metalloid?
A) metals
B) nonmetals
C) noble gases
D) precious metals
E) transition elements
A) calcium
C) mercury
E) magnesium
35. Chemical elements having both metallic and
nonmetallic characteristics are called
helium, neon, argon, krypton
hydrogen, helium, fluorine, neon
carbon, oxygen, nitrogen, fluorine
oxygen, sulfur, selenium, tellurium
fluorine, chlorine, bromine, iodine
A) iodides
C) chromates
E) chlorides
B) bromides
D) phosphates
38. Which is a halogen?
A) K
B) Ag
C) Nd
D) O
E) Br
39. Which is the atomic number of an element that is
metallic, reacts with water and has an oxidation
number of +1?
A) 1
B) 9
C) 19
D) 29
E) 39
40. Which is an alkaline earth metal?
A) Na
B) Mg
C) Cu
D) F
E) S