Question 1

The ground state electron configuration of a sulfur atom is shown below.What is the ground state electron configuration of the ion S2−?

Accepted Answer

A) 1s22s22p63s03p4 
B) 1s22s22p63s23p6 
C) 1s22s22p63s23p2 
D) 1s22s22p6 
E) 1s22s22p63s33p5 
A) 1s22s22p63s03p4 
B) 1s22s22p63s23p6 
C) 1s22s22p63s23p2 
D) 1s22s22p6 
E) 1s22s22p63s33p5

Question 2

If an atom gains one electron,it becomes an anion.

Accepted Answer

A) True 
 B)False

Question 3

Which of the following correctly matches the ion with the total number of electrons in the ion?

Accepted Answer

A) Br-,34 electrons 
B) Mg2+,14 electrons 
C) Zn2+,28 electrons 
D) P3-,15 electrons 
E) H+,2 electrons 
A) Br-,34 electrons 
B) Mg2+,14 electrons 
C) Zn2+,28 electrons 
D) P3-,15 electrons 
E) H+,2 electrons

Question 4

How many sublevels are there in the third principal energy level?

Accepted Answer

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

Question 5

Which statement concerning atoms is FALSE?

Accepted Answer

A) The atomic number of an atom is the number of protons it contains. 
B) The mass number of an atom is the sum of the number of protons,neutrons,and electrons it contains. 
C) The nucleus of an atom contains its protons and neutrons,and is positively charged. 
D) The nucleus of an atom is the heaviest part of the atom. 
E) Electrons reside outside the nucleus in what is called the electron cloud. 
A) The atomic number of an atom is the number of protons it contains. 
B) The mass number of an atom is the sum of the number of protons,neutrons,and electrons it contains. 
C) The nucleus of an atom contains its protons and neutrons,and is positively charged. 
D) The nucleus of an atom is the heaviest part of the atom. 
E) Electrons reside outside the nucleus in what is called the electron cloud.

Question 6

How many neutrons are present in an atom of the isotope 7
3 Li?

Accepted Answer

A) 3 
B) 4 
C) 7 
D) 10 
E) None of the choices are correct. 
A) 3 
B) 4 
C) 7 
D) 10 
E) None of the choices are correct.

Question 7

What are valence electrons?

Accepted Answer

A) the electrons located in the nucleus of an atom 
B) the interior electrons,located closest to the nucleus 
C) the outermost electrons in an atom 
D) the electrons with the lowest energy in an atom 
E) the total number of electrons in an atom 
A) the electrons located in the nucleus of an atom 
B) the interior electrons,located closest to the nucleus 
C) the outermost electrons in an atom 
D) the electrons with the lowest energy in an atom 
E) the total number of electrons in an atom

Question 8

What is always true for a neutral atom?

Accepted Answer

A) There is an equal number of protons and neutrons. 
B) There is an equal number of protons and electrons. 
C) There is an equal number of protons,neutrons,and electrons. 
D) The number of protons and neutrons is an even number. 
E) The number of protons,neutrons,and electrons is an even number. 
A) There is an equal number of protons and neutrons. 
B) There is an equal number of protons and electrons. 
C) There is an equal number of protons,neutrons,and electrons. 
D) The number of protons and neutrons is an even number. 
E) The number of protons,neutrons,and electrons is an even number.

Question 9

In Mendeleev's table,the elements were arranged according to their atomic mass.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following accounts for the fact that chlorine has an atomic mass of 35.45 amu rather than a whole number?

Accepted Answer

A) isotopes 
B) electrons 
C) protons 
D) radioactivity 
E) isomers 
A) isotopes 
B) electrons 
C) protons 
D) radioactivity 
E) isomers

Question 11

Which isotope of hydrogen has two neutrons?

Accepted Answer

A) hydrogen-1 
B) hydrogen-2 
C) hydrogen-3 
D) deuterium 
E) H-2 
A) hydrogen-1 
B) hydrogen-2 
C) hydrogen-3 
D) deuterium 
E) H-2

Question 12

The first experimentally based theory of atomic structure was proposed by John Dalton.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following elements has the lowest ionization energy?

Accepted Answer

A) Li 
B) B 
C) O 
D) F 
E) Ne 
A) Li 
B) B 
C) O 
D) F 
E) Ne

Question 14

In a neutral atom,what number equals the number of electrons?

Accepted Answer

A) atomic number 
B) mass number 
C) mass number minus the atomic number 
D) atomic number and mass number minus the atomic number are correct. 
E) None of the choices are correct. 
A) atomic number 
B) mass number 
C) mass number minus the atomic number 
D) atomic number and mass number minus the atomic number are correct. 
E) None of the choices are correct.

Question 15

Which of the following atoms has the biggest size (radius)?

Accepted Answer

A) Na 
B) Al 
C) Cl 
D) Rb 
E) I 
A) Na 
B) Al 
C) Cl 
D) Rb 
E) I

The ground state electron configuration of a sulfur atom is shown below.What is the ground state electron configuration of the ion S²⁻?

If an atom gains one electron,it becomes an anion.

Which of the following correctly matches the ion with the total number of electrons in the ion?

How many sublevels are there in the third principal energy level?

Which statement concerning atoms is FALSE?

How many neutrons are present in an atom of the isotope 7 3 Li?

What are valence electrons?

What is always true for a neutral atom?

In Mendeleev's table,the elements were arranged according to their atomic mass.

Which of the following accounts for the fact that chlorine has an atomic mass of 35.45 amu rather than a whole number?

Which isotope of hydrogen has two neutrons?

The first experimentally based theory of atomic structure was proposed by John Dalton.

Which of the following elements has the lowest ionization energy?

In a neutral atom,what number equals the number of electrons?

Which of the following atoms has the biggest size (radius)?

Chemistry - Methods and Measurement

Structure and Properties of Ionic and Covalent Compounds

Calculations, chemical Changes, and the Chemical Equation

States of Matter: Gases, liquids, and Solids

Solutions

Energy,rate and Equilibrium

Acids and Bases

The Nucleus, radioactivity, and Nuclear Medicine

An Introduction to Organic Chemistry

The Unsaturated Hydrocarbons: Alkenes, alkynes, and Aromatics

Alcohols, phenols, thiols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Carboxylic Acid Derivatives

Amines and Amides

Carbohydrates

Lipids and Their Functions in Biochemical Systems

Protein Structure and Function

Enzymes

Introduction to Molecular Genetics

Carbohydrate Metabolism

Aerobic Respiration and Energy Production

Fatty Acid Metabolism

Filters

Exam 2: The Structure of the Atom and the Periodic Table

The ground state electron configuration of a sulfur atom is shown below.What is the ground state electron configuration of the ion S2−?

If an atom gains one electron,it becomes an anion.

Which of the following correctly matches the ion with the total number of electrons in the ion?

How many sublevels are there in the third principal energy level?

Which statement concerning atoms is FALSE?

How many neutrons are present in an atom of the isotope 7 3 Li?

What are valence electrons?

What is always true for a neutral atom?

In Mendeleev's table,the elements were arranged according to their atomic mass.

Which of the following accounts for the fact that chlorine has an atomic mass of 35.45 amu rather than a whole number?

Which isotope of hydrogen has two neutrons?

The first experimentally based theory of atomic structure was proposed by John Dalton.

Which of the following elements has the lowest ionization energy?

In a neutral atom,what number equals the number of electrons?

Which of the following atoms has the biggest size (radius)?

Chemistry - Methods and Measurement

Structure and Properties of Ionic and Covalent Compounds

Calculations, chemical Changes, and the Chemical Equation

States of Matter: Gases, liquids, and Solids

Solutions

Energy,rate and Equilibrium

Acids and Bases

The Nucleus, radioactivity, and Nuclear Medicine

An Introduction to Organic Chemistry

The Unsaturated Hydrocarbons: Alkenes, alkynes, and Aromatics

Alcohols, phenols, thiols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Carboxylic Acid Derivatives

Amines and Amides

Carbohydrates

Lipids and Their Functions in Biochemical Systems

Protein Structure and Function

Enzymes

Introduction to Molecular Genetics

Carbohydrate Metabolism

Aerobic Respiration and Energy Production

Fatty Acid Metabolism

Filters

The ground state electron configuration of a sulfur atom is shown below.What is the ground state electron configuration of the ion S²⁻?