Question 1

What Group IA (1) ion has the electronic arrangement shown 1s22s22p6

Accepted Answer

A) lithium ion 
B) sodium ion 
C) potassium ion 
D) magnesium ion 
E) calcium ion 
A) lithium ion 
B) sodium ion 
C) potassium ion 
D) magnesium ion 
E) calcium ion

Question 2

What term is used to describe atoms of the same element that have different masses?

Accepted Answer

A) radioactive 
B) constituents 
C) isotopes 
D) telomers 
E) isomers 
A) radioactive 
B) constituents 
C) isotopes 
D) telomers 
E) isomers

Question 3

The ground state electron configuration of chlorine is shown.Which statement concerning an atom of chlorine is FALSE?

Accepted Answer

A) A chlorine atom has 17 total electrons. 
B) The outermost energy level in a chlorine atom is n=3. 
C) A chlorine atom has 5 valence electrons. 
D) A chlorine atom needs one electron to obtain an octet in its outermost energy level. 
E) A chlorine atom has 17 protons. 
A) A chlorine atom has 17 total electrons. 
B) The outermost energy level in a chlorine atom is n=3. 
C) A chlorine atom has 5 valence electrons. 
D) A chlorine atom needs one electron to obtain an octet in its outermost energy level. 
E) A chlorine atom has 17 protons.

Question 4

What are the columns of elements on the periodic table called?

Accepted Answer

A) groups 
B) shells 
C) periods 
D) metals 
E) rows 
A) groups 
B) shells 
C) periods 
D) metals 
E) rows

Question 5

Which one of the following elements has the highest electron affinity?

Accepted Answer

A) Li 
B) K 
C) Kr 
D) O 
E) Cl 
A) Li 
B) K 
C) Kr 
D) O 
E) Cl

Question 6

Which statement is TRUE concerning Bohr's model of an atom?

Accepted Answer

A) The model involved the study of helium. 
B) The model led to the understanding that the energy of an electron is quantized. 
C) When electrons in an excited state return to the ground state, they absorb light. 
D) Bohr's model explains that electrons have a negative charge. 
E) The model defines the existence of orbitals. 
A) The model involved the study of helium. 
B) The model led to the understanding that the energy of an electron is quantized. 
C) When electrons in an excited state return to the ground state, they absorb light. 
D) Bohr's model explains that electrons have a negative charge. 
E) The model defines the existence of orbitals.

Question 7

Which of the following correctly gives the electron capacity of a principal energy level in terms of the number n?

Accepted Answer

A) n 
B) 2n 
C) 2n + 2 
D) (n2) 
E) (2n2) 
A) n 
B) 2n 
C) 2n + 2 
D) (n2) 
E) (2n2)

Question 8

For the imaginary element abdicinium (Ab), two isotopes exist.Isotope one has a mass of 40.005 amu with a relative abundance of 14.00%.Isotope two has a mass of 41.008 amu with a relative abundance of 86.00%.What is the atomic mass of the element?

Accepted Answer

A) 40.99 amu 
B) 40.87 amu 
C) 40.61 amu 
D) 40.21 amu 
E) 40.05 amu 
A) 40.99 amu 
B) 40.87 amu 
C) 40.61 amu 
D) 40.21 amu 
E) 40.05 amu

Question 9

What does the mass number minus the atomic number represent?

Accepted Answer

A) number of protons 
B) number of electrons 
C) number of neutrons 
D) number of protons - number of neutrons 
E) number of neutrons - number of protons 
A) number of protons 
B) number of electrons 
C) number of neutrons 
D) number of protons - number of neutrons 
E) number of neutrons - number of protons

Question 10

Who stated that the elements, when arranged according to their atomic masses, showed a distinct periodicity of their properties?

Accepted Answer

A) Dmitri Mendeleev 
B) Niels Bohr 
C) J.J Thomson 
D) Ernest Rutherford 
E) John Dalton 
A) Dmitri Mendeleev 
B) Niels Bohr 
C) J.J Thomson 
D) Ernest Rutherford 
E) John Dalton

Question 11

The Aufbau Principle specifies which of the following?

Accepted Answer

A) Each atomic orbital has a maximum capacity of two electrons. 
B) Two electrons in the same orbital must have opposite spins. 
C) Two electrons in the same orbital must be spin paired. 
D) Electrons will occupy the lowest energy orbitals that are available. 
E) Electrons will half-fill orbitals of equal energy, before any become completely filled. 
A) Each atomic orbital has a maximum capacity of two electrons. 
B) Two electrons in the same orbital must have opposite spins. 
C) Two electrons in the same orbital must be spin paired. 
D) Electrons will occupy the lowest energy orbitals that are available. 
E) Electrons will half-fill orbitals of equal energy, before any become completely filled.

Question 12

The total mass of the protons in any neutral atom is about _______ times the total mass of electrons in the atom.

Accepted Answer

A) 0.0005 
B) 0.3 
C) 1 
D) 2 
E) 2000 
A) 0.0005 
B) 0.3 
C) 1 
D) 2 
E) 2000

Question 13

The modern periodic table is arranged according to what property?

Accepted Answer

A) atomic number 
B) mass number 
C) atomic mass 
D) neutron number 
E) density 
A) atomic number 
B) mass number 
C) atomic mass 
D) neutron number 
E) density

Question 14

Which describes the basic concept of Bohr?s theory of the atom?

Accepted Answer

A) Atoms contain a small, dense positively charged region called the nucleus. 
B) The energy of an electron in an atom is quantized; it has only certain allowable values. 
C) Light is made up of particles called photons. 
D) Electrons have the magnetic property of spin. 
E) Radioactive atoms spontaneously decay and release large amounts of energy from the nucleus. 
A) Atoms contain a small, dense positively charged region called the nucleus. 
B) The energy of an electron in an atom is quantized; it has only certain allowable values. 
C) Light is made up of particles called photons. 
D) Electrons have the magnetic property of spin. 
E) Radioactive atoms spontaneously decay and release large amounts of energy from the nucleus.

Question 15

The ions formed from Group IIA (2) atoms have charges of 2-.

Accepted Answer

A) True 
 B)False

Question 16

How many valence electrons are in an atom of carbon?

Accepted Answer

A) 8 
B) 6 
C) 4 
D) 1 
E) 0 
A) 8 
B) 6 
C) 4 
D) 1 
E) 0

Question 17

The ion K+ is formed by which process?

Accepted Answer

A) loss of an electron by K 
B) gain of a proton by K 
C) loss of a proton by K 
D) gain of an electron by K 
E) None of these are correct. 
A) loss of an electron by K 
B) gain of a proton by K 
C) loss of a proton by K 
D) gain of an electron by K 
E) None of these are correct.

Question 18

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

Question 19

In the calcium atom represented by the symbol   , there are 20 protons, 20 neutrons, and 20 electrons.

Accepted Answer

A) True 
 B)False

Question 20

Which element is a halogen in period 4?

Accepted Answer

A) bromine 
B) silicon 
C) iodine 
D) krypton 
E) potassium 
A) bromine 
B) silicon 
C) iodine 
D) krypton 
E) potassium

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

What Group IA (1) ion has the electronic arrangement shown 1s22s22p6

What term is used to describe atoms of the same element that have different masses?

The ground state electron configuration of chlorine is shown.Which statement concerning an atom of chlorine is FALSE?

What are the columns of elements on the periodic table called?

Which one of the following elements has the highest electron affinity?

Which statement is TRUE concerning Bohr's model of an atom?

Which of the following correctly gives the electron capacity of a principal energy level in terms of the number n?

For the imaginary element abdicinium (Ab), two isotopes exist.Isotope one has a mass of 40.005 amu with a relative abundance of 14.00%.Isotope two has a mass of 41.008 amu with a relative abundance of 86.00%.What is the atomic mass of the element?

What does the mass number minus the atomic number represent?

Who stated that the elements, when arranged according to their atomic masses, showed a distinct periodicity of their properties?

The Aufbau Principle specifies which of the following?

The total mass of the protons in any neutral atom is about _______ times the total mass of electrons in the atom.

The modern periodic table is arranged according to what property?

Which describes the basic concept of Bohr?s theory of the atom?

The ions formed from Group IIA (2) atoms have charges of 2-.

How many valence electrons are in an atom of carbon?

The ion K+ is formed by which process?

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

In the calcium atom represented by the symbol , there are 20 protons, 20 neutrons, and 20 electrons.

Which element is a halogen in period 4?

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 Saturated Hydrocarbons

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

What Group IA (1) ion has the electronic arrangement shown 1s²2s²2p⁶

The ion K⁺ is formed by which process?