Question 1

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]5s24d105p4 
A) [Kr]5s25p64d8 
B) [Kr]5s25d105p4 
C) [Kr]5s24d105p6 
D) [Kr]5s24f14 
E) [Kr]5s24d105p4

Question 2

Select the element whose Lewis symbol is correct.

Accepted Answer

A) •Ga• 
B) •Al• 
C) Al• • 
D) • Tl • 
A) •Ga• 
B) •Al• 
C) Al• • 
D) • Tl •

Question 3

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. 
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.

Question 4

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

Accepted Answer

A) Rb 
B) Al 
C) S 
D) Na 
A) Rb 
B) Al 
C) S 
D) Na

Question 5

Determine which sublevel designation is not legitimate.

Accepted Answer

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

Question 6

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

Accepted Answer

A) True 
 B)False

Question 7

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

Accepted Answer

A) 1 
B) 2 
C) 0 
D) 3 
E) 7 
A) 1 
B) 2 
C) 0 
D) 3 
E) 7

Question 8

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) 10 
A) 3 
B) 5 
C) 6 
D) 8 
E) 10

Question 9

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. 
A) ns2np6. 
B) ns2np5. 
C) ns2np6 (n − 1)d7. 
D) ns1. 
E) ns2np7.

Question 10

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

Accepted Answer

A) Sn 
B) Sb 
C) Pb 
D) Ge 
E) Te 
A) Sn 
B) Sb 
C) Pb 
D) Ge 
E) Te

Question 11

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) 15 
A) 2 
B) 3 
C) 5 
D) 10 
E) 15

Question 12

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

Question 13

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

Accepted Answer

A) Ca 
B) Mg 
C) O 
D) P 
A) Ca 
B) Mg 
C) O 
D) P

Question 14

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

Accepted Answer

A) True 
 B)False

Question 15

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

Accepted Answer

A) 4 
B) 2 
C) 6 
D) 3 
E) 7 
A) 4 
B) 2 
C) 6 
D) 3 
E) 7

Question 16

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

Question 17

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

Accepted Answer

A) 1 
B) 2 
C) 0 
D) 3 
E) 7 
A) 1 
B) 2 
C) 0 
D) 3 
E) 7

Question 18

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

Accepted Answer

A) 0 
B) 1 
C) 2 
D) 3 
E) 4 
A) 0 
B) 1 
C) 2 
D) 3 
E) 4

Question 19

How many valence electrons does a carbon atom have?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 6 
A) 1 
B) 2 
C) 3 
D) 4 
E) 6

Question 20

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

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

Select the element whose Lewis symbol is correct.

An oxide ion, O^2-, has

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

Determine which sublevel designation is not legitimate.

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

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

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

The general electron configuration for atoms of the halogen group is

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

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

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

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

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

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

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

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

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

How many valence electrons does a carbon atom have?

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

Atoms and Elements

Compounds and Chemical Bonds

How Chemists Use Numbers

The Mole and Chemical Formulas

Molecular Shape

Solids, Liquids, and Phase Changes

Gases

Physical Properties of Solutions

Chemical Reactions and Chemical Equations

Using Balanced Chemical Equations

Acids and Bases

Equilibrium

Organic Chemistry

Biochemistry

Nuclear Chemistry

Electrochemistry

Filters

Exam 2: Electrons and the Periodic Table

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

Select the element whose Lewis symbol is correct.

An oxide ion, O2-, has

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

Determine which sublevel designation is not legitimate.

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

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

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

The general electron configuration for atoms of the halogen group is

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

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

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

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

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

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

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

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

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

How many valence electrons does a carbon atom have?

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

Atoms and Elements

Compounds and Chemical Bonds

How Chemists Use Numbers

The Mole and Chemical Formulas

Molecular Shape

Solids, Liquids, and Phase Changes

Gases

Physical Properties of Solutions

Chemical Reactions and Chemical Equations

Using Balanced Chemical Equations

Acids and Bases

Equilibrium

Organic Chemistry

Biochemistry

Nuclear Chemistry

Electrochemistry

Filters

An oxide ion, O^2-, has

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

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

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

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