______ is a representative element.

1
______ is a representative element.

1. 22Ti
2. 42Mo
3. 81Tl
4. 24Cr
5. 92U

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2
What would be the outer electron configuration of
group IVA (C, Si, Ge, . . .)?

1. ns2nd2np0
2. ns2np4
3. ns0np4
4. ns1np3
5. ns2np2

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3
Choose the term that best describes all members
of this series of elements V, Cr, Fe, Co, Ni

1. metalloids
2. d-transition elements
3. alkaline earth metals
4. alkali metals
5. representative elements

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4
Which element has the largest atomic radius?

1. Mo
2. Mg
3. Ba
4. Cl
5. At

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5
Which element has the lowest first ionization
energy?

1. Al
2. Si
3. P
4. S
5. Cl

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6
Which of the following elements has the most
negative electron affinity?

1. Ge
2. I
3. Br
4. Se
5. K

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7
Which response includes all of the following that
are isoelectronic with Kr, and no other species?
I. S2- II. ArIII. K IV. Sr2 V. Br-

1. I, II, and III
2. II and IV
3. III and IV
4. IV and V
5. I, IV, and V

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8
Consider the following atoms and ions Na, Na,
Mg, Mg2, O, O2-, F, F-. Which one of the
following groups includes only isoelectronic
species?

1. Na, Mg, O, F
2. Na, Na, Mg, Mg2
3. O, O2-, F, F-
4. Na, Mg2, O2-, F-
5. none of these

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9
Which ion has the largest radius?

1. P3-
2. S2-
3. Cl-
4. N3-
5. F-

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10
Which ion has the smallest radius?

1. K
2. Rb
3. Ca2
4. Sr2
5. Ba2

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11
Which one of the following properties is based on
the attraction of an atom for electrons in a
chemical bond?

1. binding energy
2. mass defect
3. electron affinity
4. ionization energy
5. electronegativity

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12
Which element has the lowest electronegativity?

1. Be
2. Ba
3. Ga
4. Tl
5. I

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13
Which of these comparisons of electronegativities
is (are) correct? I. O gt N II. S gt P III. Rb gt Li
IV. Br gt Cl

1. I and IV
2. I and III
3. I and II
4. II and III
5. III and IV

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14
Which one of the following hydrides is acidic?

1. RbH
2. SrH2
3. H2S
4. NaH
5. NH3

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15
The principal product of the reaction of iron,
Fe, with a limited amount of oxygen is I , while
with an excess of oxygen it is II . I / II

1. Fe3O2 / FeO
2. Fe2O3 / FeO
3. FeO / Fe3O2
4. FeO / Fe3O4
5. FeO / Fe2O3

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16
The most common oxidation states of nonmetals do
not include _______ .

1. zero
2. the periodic group number of the nonmetal
3. the periodic group number of the nonmetal minus
   two
4. the periodic group number of the nonmetal minus
   eight
5. the negative of the periodic group number of the
   nonmetal

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17
The most common oxidation states of selenium are
4 and 6 in molecular oxides. What is the
formula for the product of the reaction of
selenium with a limited amount of oxygen?

1. SeO
2. SeO2
3. SeO3
4. Se2O3
5. Se3O4

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18
The acid for which N2O3 can be considered the
anhydride is __________.

1. H2N2O2
2. HNO2
3. HNO3
4. H2NO3
5. HN3

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19
Write the balanced formula unit equation for the
reaction of arsenic, As4, heated with a limited
amount of oxygen (The molecular formula for the
product is twice the empirical formula). What is
the sum of the coefficients?

1. 2
2. 8
3. 3
4. 4
5. 5

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20
Write the balanced formula unit equation for the
reaction of tetraphosphorus decoxide with excess
water. What is the sum of the coefficients?

1. 10
2. 7
3. 9
4. 11
5. 5

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