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

 

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