Question 1

How many unpaired electrons does a ground-state atom of sulfur have?

Accepted Answer

A)  0
B)  1
C)  2
D)  3
E)  4F) B) and C)
G) A) and E)

Question 2

How many electrons are there in the 2nd principal energy level (n = 2)  of a phosphorus atom?

Accepted Answer

A)  3
B)  5
C)  6
D)  8
E)  10F) B) and C)
G) All of the above

Question 3

Each shell (principal energy level) of quantum number n contains n subshells.

Accepted Answer

A) True 
 B)False

Question 4

How many dots does the Lewis dot symbol for oxygen have around it?

Accepted Answer

A)  4
B)  2
C)  6
D)  3
E)  7F) A) and C)
G) A) and B)

Question 5

The Lewis dot symbol consists of the symbol for the element surrounded by dot(s) .What does the dot or dots represent?

Accepted Answer

A)  Electron configuration
B)  Valence electrons
C)  Atomic number
D)  Atomic mass
E)  Core electronsF) A) and B)
G) C) and D)

Question 6

Select the element that will gain an electron most easily, based on the periodic trend.

Accepted Answer

A)  Rb
B)  Al
C)  S
D)  NaE) B) and D)
F) A) and B)

Question 7

Which element has the following ground-state electron configuration? [Kr]5s24d105p2

Accepted Answer

A)  Sn
B)  Sb
C)  Pb
D)  Ge
E)  TeF) A) and E)
G) A) and B)

Question 8

Determine which sublevel designation is not legitimate.

Accepted Answer

A)  1p
B)  2s
C)  3d
D)  4pE) B) and C)
F) C) and D)

Question 9

How many valence electrons does a carbon atom have?

Accepted Answer

A)  1
B)  2
C)  3
D)  4
E)  6F) All of the above
G) B) and C)

Question 10

The general electron configuration for atoms of the halogen group is

Accepted Answer

A)  ns2np6.
B)  ns2np5.
C)  ns2np6 (n − 1) d7.
D)  ns1.
E)  ns2np7.F) None of the above
G) C) and D)

Question 11

Select the element whose Lewis symbol is correct.

Accepted Answer

A)  •Ga•
B)  •Al•
C)  Al• •
D)  • Tl •E) C) and D)
F) B) and C)

Question 12

An element with the electron configuration [noble gas]ns2(n − 1) d10np3 has ____________ valence electrons.

Accepted Answer

A)  2
B)  3
C)  5
D)  10
E)  15F) A) and B)
G) C) and E)

Question 13

What is the correct electron configuration for a germanium (Ge)  atom?

Accepted Answer

A)  1s22s22p63s23p64s24p2
B)  1s22s22p63s23p64s23d104p2
C)  1s22s22p63s23p2
D)  1s22s23s23p5
E)  None of the answers is correct.F) B) and D)
G) None of the above

Question 14

An oxide ion, O2-, has

Accepted Answer

A)  8 protons and 10 electrons.
B)  10 protons and 8 electrons.
C)  8 protons and 9 electrons.
D)  8 protons and 7 electrons.
E)  10 protons and 7 electrons.F) A) and B)
G) C) and D)

Question 15

How many protons and electrons are present in one Br- ion?

Accepted Answer

A)  35 protons, 35 electrons
B)  80 protons, 81 electrons
C)  35 protons, 34 electrons
D)  35 protons, 36 electrons
E)  80 protons, 34 electronsF) B) and E)
G) C) and D)

Question 16

Select the correct electron configuration for Te (Z = 52) .

Accepted Answer

A)  [Kr]5s25p64d8
B)  [Kr]5s25d105p4
C)  [Kr]5s24d105p6
D)  [Kr]5s24f14
E)  [Kr]5s24d105p4F) A) and B)
G) A) and E)

Question 17

Select the element that will gain an electron most easily, based on the periodic trend.

Accepted Answer

A)  Ca
B)  Mg
C)  O
D)  PE) A) and B)
F) None of the above

Question 18

How many dots does the Lewis dot symbol for sodium have around it?

Accepted Answer

A)  1
B)  2
C)  0
D)  3
E)  7F) A) and B)
G) B) and D)

Question 19

How many dots does the Lewis dot symbol for magnesium have around it?

Accepted Answer

A)  1
B)  2
C)  0
D)  3
E)  7F) All of the above
G) A) and C)

Question 20

For all atoms of the same element, the 2s orbital is larger than the 1s orbital.

Accepted Answer

A) True 
 B)False

Exam 2: Electrons and the Periodic Table

Select the element whose Lewis symbol is correct.

Correct AnswerverifiedShow Answer

How many dots does the Lewis dot symbol for oxygen have around it?

Correct AnswerverifiedShow Answer

How many dots does the Lewis dot symbol for sodium have around it?

Correct AnswerverifiedShow Answer

How many protons and electrons are present in one Br- ion?

Correct AnswerverifiedShow Answer

Each shell (principal energy level) of quantum number n contains n subshells.

Correct AnswerverifiedShow Answer

How many electrons are there in the 2nd principal energy level (n = 2) of a phosphorus atom?

Correct AnswerverifiedShow Answer

How many unpaired electrons does a ground-state atom of sulfur have?

Correct AnswerverifiedShow Answer

An oxide ion, O2-, has

Correct AnswerverifiedShow Answer

For all atoms of the same element, the 2s orbital is larger than the 1s orbital.

Correct AnswerverifiedShow Answer

What is the correct electron configuration for a germanium (Ge) atom?

Correct AnswerverifiedShow Answer

An element with the electron configuration [noble gas]ns2(n − 1) d10np3 has ____________ valence electrons.

Correct AnswerverifiedShow Answer

Which element has the following ground-state electron configuration? [Kr]5s24d105p2

Correct AnswerverifiedShow Answer

The general electron configuration for atoms of the halogen group is

Correct AnswerverifiedShow Answer

How many dots does the Lewis dot symbol for magnesium have around it?

Correct AnswerverifiedShow Answer

Determine which sublevel designation is not legitimate.

Correct AnswerverifiedShow Answer

Select the element that will gain an electron most easily, based on the periodic trend.

Correct AnswerverifiedShow Answer

How many valence electrons does a carbon atom have?

Correct AnswerverifiedShow Answer

Select the element that will gain an electron most easily, based on the periodic trend.

Correct AnswerverifiedShow Answer

Select the correct electron configuration for Te (Z = 52) .

Correct AnswerverifiedShow Answer

The Lewis dot symbol consists of the symbol for the element surrounded by dot(s) .What does the dot or dots represent?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

How many protons and electrons are present in one Br^- ion?

Correct Answer
verified

Correct Answer
verified

How many electrons are there in the 2^nd principal energy level (n = 2) of a phosphorus atom?

Correct Answer
verified

Correct Answer
verified

An oxide ion, O^2-, has

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

An element with the electron configuration [noble gas]ns²(n − 1) d¹⁰np³ has ____________ valence electrons.

Correct Answer
verified

Which element has the following ground-state electron configuration? [Kr]5s²4d¹⁰5p²

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified