UNIT 5 TEST
1. The first to observe the repeating properties
of elements when arranged according to mass
was
(A) Moseley (B) Mendeleev (C)
Avogadro (D) Bohr
2. What is the total number of valence electrons
in an atom of an element in Group 14 in the ground state?
(A) 2 (B) 14 (C) 6 (D) 4
3. What is the total number of electrons found
in the outermost energy level of a noble gas in the ground
state?
(A) 8 (B) 7 (C) 2 (D) 1
4. Atoms of nonmetallic
elements tend to
(A) lose
electrons and form negative ions (B)
lose electrons and form positive ions
(C)
gain electrons and form negative ions (D)
gain electrons and form positive ions
5. An element has the electron configuration 1s2
2s2 2p4. In what group of the Periodic Table is it
located?
(A) 8 (B) 4 (C)
14 (D) 16 (E) 2
6. An element has the electron configuration 1s2
2s2 2p4. In what period of the Periodic Table is it
located?
(A) 8 (B) 4 (C)
14 (D) 16 (E) 2
7. What is the likeliest oxidation number of an
element located in Group 17?
(A) +7 (B) +1 (C)
-7 (D) -1 (E) none of these
8. On the Periodic Table, elements in the same group have the same
(A) electronegativity (B)
ionization energy
(C) number
of occupied energy levels (D) valence electron configurations
9. On the Periodic Table, elements in the same period have the same
(A) electronegativity (B)
ionization energy
(C) number of
occupied energy levels (D) valence electron
configurations
10. The most reactive nonmetals are members of Group
(A) 18 (B) 17 (C)
2 (D) 1 (E) 13
11. More than two-thirds of the elements on the
Periodic Table are
(A) metals (B) nonmetals (C) metalloids (D) noble gases
12. The number of valence electrons in an atom
with an electron configuration of 1s2 2s2 2p6
3s2 3p2 is
(A) 3 (B) 14 (C) 4 (D) 2
13. The subatomic particle that plays the
greatest role in determining the physical and chemical properties
of an element is the
(A) proton (B) neutron (C) electron (D) ion
14. From top to bottom
in a group, electronegativity
(A) decreases (B) increases (C) remains the same
(D) varies unpredictably
15. The elements on the modern Periodic Table are arranged in order of increasing
(A) atomic
radius (B) atomic number (C) atomic mass (D) oxidation number
16. The most reactive nonmetals on the Periodic Table have
(A) large
radii and high electronegativities (B) large radii and low
electronegativities
(C)
small radii and high electronegativities (D) small radii and low electronegativities
17. Within a group, from
top to bottom, ionization energy generally
(A) decreases (B) increases (C) remains the same
(D) varies unpredictably
18. The group known for the octet of electrons
in the outermost energy level is the
(A) noble
gases (B) halogens (C)
alkaline earth metals (D) alkali metals
19. An element with atomic number X is a
slightly reactive nonmetal. What
property could an element with
the atomic number X + 1 have?
(A) very
reactive nonmetal (B)
very reactive metal
(C) unreactive
element (D) metalloid with strong metallic
properties
20. What is the total number of electrons found
in the outermost energy level of an alkali metal in the
ground state?
(A) 8 (B) 7 (C)
2 (D) 1
21. Within a group, from
top to bottom, atomic radius
(A) decreases (B) increases (C) remains the same
(D) varies unpredictably
22. The scientist who arranged the Periodic Table
according to atomic number was
(A) Mendeleev (B) Moseley (C) Avogadro (D) Bohr
23. In Period 3, as the elements are considered from left to right, there is an increase in
(A) ionization
energy (B)
metallic character
(C) atomic
radius (D)
oxidation number
24. A metalloid with strong nonmetallic
properties could be followed on the Periodic Table by
(A) a
very reactive metal (B) a
metalloid with strong metallic properties
(C) a reactive
nonmetal (D) a less reactive metal
25. Which of the following is the electron
configuration of a neutral atom in the ground state with a
total
of three valence electrons?
(A) 1s2 2s2
2p6 3s2 3p6 4s2 3d10 4p1 (B)
1s2 2s2 2p6 3s2 3p3
(C)
1s2 2s2 2p6 3s2 3p6 4s2
3d3 (D)
1s2 2s1
C 26. period (A)
vertical column of elements
E 27. transition metals (B) Groups 1, 2, & 13 18
B 28. main group elements (C) horizontal row
of elements
A 29. group (D)
two rows at the bottom of the Periodic Table
D 30. rare earth elements (E) Groups 3 12