Question 1

How many electrons does a nitrogen atom need to fill its outermost s and p subshells?

Accepted Answer

A)  5
B)  3
C)  1
D)  8
E)  0F) A) and B)
G) A) and C)

Question 2

Consider the following reaction 2A + 3F2 $\rarr$2AF3.What is a reasonable guess for the identity element A?

Accepted Answer

Aluminum, or other e...

Question 3

Arrange the following ions in order of increasing ionic radius: K+, P3- , S2-, Cl-. increasing radius  →\rarr→

Accepted Answer

A)  K+ - 2- 3-
B)  K+ 3- 2- -
C)  P3- 2- - +
D)  Cl- 2- 3- +
E)  Cl- 2- + 3- F) B) and C)
G) B) and E)

Question 4

Mendeleev proposed the existence of an unknown element that he called eka-aluminum.This element is now called

Accepted Answer

A)  gallium.
B)  silicon.
C)  magnesium.
D)  boron.
E)  germanium.F) B) and C)
G) A) and B)

Question 5

Which of the following elements behaves chemically similarly to oxygen?

Accepted Answer

A)  magnesium
B)  sodium
C)  sulfur
D)  chlorine
E)  ironF) berylliumG) A) and B)
H) D) and E)

Question 6

The cobalt(III) ion, Co3+, has how many 3d electrons?

Accepted Answer

A)  0
B)  7
C)  6
D)  5
E)  4F) C) and D)
G) B) and E)

Question 7

Which ion is isoelectronic with Ar?

Accepted Answer

A)  Fe2+
B)  F-
C)  Br-
D)  Ga3+
E)  Ca2+F) A) and E)
G) C) and D)

Question 8

The chief contribution of physicist Henry Moseley to atomic theory was

Accepted Answer

A)  the discovery of the periodic law.
B)  the determination of the charge of the proton.
C)  the measurement of the atomic numbers of the elements.
D)  the scientist who determined the electric charge of the electron.
E)  the discovery of the law of octaves.F) A) and E)
G) All of the above

Question 9

How many electrons are in the 4p subshell of selenium?

Accepted Answer

A)  0
B)  2
C)  4
D)  5
E)  6F) B) and C)
G) None of the above

Question 10

Concerning the electron configuration of P, 1s22s22p63s23p4, write the configuration for the valence shell electrons only

Accepted Answer

Question 11

The law of octaves states that every eighth element has similar properties when arranged in order of increasing

Accepted Answer

A)  nuclear binding energy.
B)  number of electrons.
C)  number of neutrons.
D)  atomic mass.
E)  atomic number.F) A) and E)
G) C) and E)

Question 12

Which of the following is the electron configuration of a sulfide ion?

Accepted Answer

A)  [Ne]3s23p4
B)  [Ne]
C)  [Ne]3s23p1
D)  [Ar]
E)  [Ne]3s23p2F) A) and B)
G) A) and C)

Question 13

Which of the following elements has the smallest ionization energy?

Accepted Answer

A)  Li
B)  Na
C)  Be
D)  K
E)  RbF) None of the above
G) A) and B)

Question 14

Since arsenic is a nonmetal, As2O3 is expected to be a/an _____ oxide.

Accepted Answer

A)  acidic
B)  ionic
C)  amphoteric
D)  neutral
E)  basicF) A) and B)
G) A) and C)

Question 15

Which one of the following elements is a transition element?

Accepted Answer

A)  antimony
B)  barium
C)  chromium
D)  potassium
E)  seleniumF) C) and E)
G) B) and E)

Question 16

In what row and group of the periodic table would you find the element with the electron configuration [Kr]5s24d105p2?

Accepted Answer

A)  row 4, group 4A
B)  row 4, group 5A
C)  row 5, group 4A
D)  row 5, group 5A
E)  none of the aboveF) D) and E)
G) A) and C)

Question 17

For phosphorus atoms, which ionization energy will show an exceptionally large increase over the previous ionization energy?

Accepted Answer

A)  2nd
B)  3rd
C)  4th
D)  5th
E)  6thF) A) and B)
G) None of the above

Question 18

Which of the following elements behaves chemically similarly to potassium?

Accepted Answer

A)  magnesium
B)  sodium
C)  beryllium
D)  chlorine
E)  ironF) C) and D)
G) A) and B)

Question 19

Which of the following is the general electron configuration for the outermost electrons of elements in the alkaline earth group?

Accepted Answer

A)  ns1
B)  ns2
C)  ns2np4
D)  ns2np5
E)  ns2np6(n -1) d6F) None of the above
G) A) and E)

Question 20

Which of the following is a basic oxide?

Accepted Answer

A)  NO2
B)  H2O
C)  Na2O
D)  SnO
E)  SO2F) D) and E)
G) C) and E)

Exam 8: Periodic Relationships Among the Elements

Since arsenic is a nonmetal, As2O3 is expected to be a/an _____ oxide.

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Which of the following elements has the smallest ionization energy?

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How many electrons are in the 4p subshell of selenium?

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Which one of the following elements is a transition element?

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Which of the following elements behaves chemically similarly to potassium?

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Which ion is isoelectronic with Ar?

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How many electrons does a nitrogen atom need to fill its outermost s and p subshells?

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The law of octaves states that every eighth element has similar properties when arranged in order of increasing

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Mendeleev proposed the existence of an unknown element that he called eka-aluminum.This element is now called

Correct AnswerverifiedShow Answer

For phosphorus atoms, which ionization energy will show an exceptionally large increase over the previous ionization energy?

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Which of the following is the general electron configuration for the outermost electrons of elements in the alkaline earth group?

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Consider the following reaction 2A + 3F2 →\rarr→ 2AF3.What is a reasonable guess for the identity element A?

Correct AnswerverifiedAluminum, or other e...View AnswerShow Answer

Which of the following is a basic oxide?

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Which of the following is the electron configuration of a sulfide ion?

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Arrange the following ions in order of increasing ionic radius: K+, P3- , S2-, Cl-. increasing radius →\rarr→

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Concerning the electron configuration of P, 1s22s22p63s23p4, write the configuration for the valence shell electrons only

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The chief contribution of physicist Henry Moseley to atomic theory was

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In what row and group of the periodic table would you find the element with the electron configuration [Kr]5s24d105p2?

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The cobalt(III) ion, Co3+, has how many 3d electrons?

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Which of the following elements behaves chemically similarly to oxygen?

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Since arsenic is a nonmetal, As₂O₃ is expected to be a/an _____ oxide.

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Consider the following reaction 2A + 3F₂ $\rarr$ 2AF₃.What is a reasonable guess for the identity element A?

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Aluminum, or other e...
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Arrange the following ions in order of increasing ionic radius: K⁺, P^3-, S^2-, Cl^-. increasing radius $\rarr$

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Concerning the electron configuration of P, 1s²2s²2p⁶3s²3p⁴, write the configuration for the valence shell electrons only

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In what row and group of the periodic table would you find the element with the electron configuration [Kr]5s²4d¹⁰5p²?

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The cobalt(III) ion, Co³⁺, has how many 3d electrons?

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