Question 1

Why do we only see four lines in the emission spectrum of hydrogen?

Accepted Answer

Only four of the ele

Question 2

A 6.0-gram champagne cork is shot out of an opened champagne bottle and traveled at a speed of 65 km/hour.Calculate the de Broglie wavelength (in meters)of the cork.

Accepted Answer

A) 6.1 × 10-33 m 
B) 1.7 × 10-36 m 
C) 6.1 × 10-36 m 
D) 1.7 × 10-33 m 
E) 5.5 × 10-20 m 
A) 6.1 × 10-33 m 
B) 1.7 × 10-36 m 
C) 6.1 × 10-36 m 
D) 1.7 × 10-33 m 
E) 5.5 × 10-20 m

Question 3

A(n)_________ is a point at which a standing wave has zero amplitude.

Accepted Answer

A) crevice 
B) node 
C) pit 
D) burrow 
E) orbital 
A) crevice 
B) node 
C) pit 
D) burrow 
E) orbital

Question 4

If n = 2 then l = 0,-1,and 1.

Accepted Answer

A) True 
 B)False

Question 5

According to ___________,no two electrons in an atom can have the same four quantum numbers.

Accepted Answer

the Pauli

Question 6

The frequency of a photon is inversely proportional to the wavelength of the radiation.

Accepted Answer

A) True 
 B)False

Question 7

What is the electron configuration for bromine?

Accepted Answer

A) 1s22s22p63s23p64s14d104p6 
B) 1s22s22p63s23p64s24d104p5 
C) 1s22s22p63s23p64s13d104p6 
D) 1s22s22p63s23p64s23d104p4 
E) 1s22s22p63s23p64s23d104p5 
A) 1s22s22p63s23p64s14d104p6 
B) 1s22s22p63s23p64s24d104p5 
C) 1s22s22p63s23p64s13d104p6 
D) 1s22s22p63s23p64s23d104p4 
E) 1s22s22p63s23p64s23d104p5

Question 8

In which region of the electromagnetic spectrum would radiation of the wavelength λ = 147.3 nm be found?

Accepted Answer

The answer of In which region of the electromagnetic spectrum...

Question 9

___________________ is the wavelength associated with a moving particle.

Accepted Answer

A) The de Broglie wavelength 
B) The Heisenburg wavelength 
C) The Hund wavelength 
D) The Aufbau wavelength 
E) None of the answers is correct. 
A) The de Broglie wavelength 
B) The Heisenburg wavelength 
C) The Hund wavelength 
D) The Aufbau wavelength 
E) None of the answers is correct.

Question 10

What is the emission of light at only specific wavelengths?

Accepted Answer

A) Emission spectra 
B) Hydrogen spectrum 
C) Wave spectra 
D) Limited spectra 
E) Line spectra 
A) Emission spectra 
B) Hydrogen spectrum 
C) Wave spectra 
D) Limited spectra 
E) Line spectra

Question 11

In not more than three lines for each answer,briefly outline one important scientific contribution of each of the following.
a)Planck
b)De Broglie
c)Heisenberg

Accepted Answer

a.Planck is responsible for first propos

Question 12

De Broglie explained electron movements by relating them to
A.waves only.
B.particles only.
C.waves and particles.
D.none of the.

Accepted Answer

A.waves only.B.parti

Question 13

The ground-state electron configuration of a calcium atom is

Accepted Answer

A) [Ne]3s2. 
B) [Ne]3s23p6. 
C) [Ar]4s13d1. 
D) [Ar]4s2. 
E) [Ar]3d2. 
A) [Ne]3s2. 
B) [Ne]3s23p6. 
C) [Ar]4s13d1. 
D) [Ar]4s2. 
E) [Ar]3d2.

Question 14

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

Accepted Answer

A) True 
 B)False

Question 15

The word _________ is used as an acronym for the amplification of light which is stimulated by the emission of radiation.

Accepted Answer

A) beam 
B) laser 
C) emit 
D) brighten 
E) light 
A) beam 
B) laser 
C) emit 
D) brighten 
E) light

Question 16

Emission spectra

Accepted Answer

A) cannot be used to identify an unknown atom. 
B) can be used to identify unknown atoms. 
C) can be explained by the movement of protons colliding with electrons. 
D) none of the. 
A) cannot be used to identify an unknown atom. 
B) can be used to identify unknown atoms. 
C) can be explained by the movement of protons colliding with electrons. 
D) none of the.

Question 17

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

Accepted Answer

A) True 
 B)False

Question 18

An electron in a 3p orbital could have a value of 2 for its angular momentum quantum number (l).

Accepted Answer

A) True 
 B)False

Question 19

How many electrons are there in the 3rd principal energy level (n = 3)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 20

What is defined as the number of waves that pass through a particular point in one second?

Accepted Answer

A) light 
B) amplitude 
C) magnitude 
D) wavelength 
E) frequency 
A) light 
B) amplitude 
C) magnitude 
D) wavelength 
E) frequency

Exam 6: Quantum Theory and the Electronic Structure of Atoms

Why do we only see four lines in the emission spectrum of hydrogen?

A 6.0-gram champagne cork is shot out of an opened champagne bottle and traveled at a speed of 65 km/hour.Calculate the de Broglie wavelength (in meters)of the cork.

A(n)_________ is a point at which a standing wave has zero amplitude.

If n = 2 then l = 0,-1,and 1.

According to ___________,no two electrons in an atom can have the same four quantum numbers.

The frequency of a photon is inversely proportional to the wavelength of the radiation.

What is the electron configuration for bromine?

In which region of the electromagnetic spectrum would radiation of the wavelength λ = 147.3 nm be found?

___________________ is the wavelength associated with a moving particle.

What is the emission of light at only specific wavelengths?

In not more than three lines for each answer,briefly outline one important scientific contribution of each of the following. a)Planck b)De Broglie c)Heisenberg

De Broglie explained electron movements by relating them to A.waves only. B.particles only. C.waves and particles. D.none of the.

The ground-state electron configuration of a calcium atom is

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

The word _________ is used as an acronym for the amplification of light which is stimulated by the emission of radiation.

Emission spectra

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

An electron in a 3p orbital could have a value of 2 for its angular momentum quantum number (l).

How many electrons are there in the 3rd principal energy level (n = 3)of a phosphorus atom?

What is defined as the number of waves that pass through a particular point in one second?

Chemistry: the Central Science

Atoms Molecules and Ions

Stoichiometry Ratios of Combination

Reactions in Aqueous Solutions

Thermochemistry

Electron Configuration and the Periodic Table

Chemical Bonding I Basic Concepts

Chemical Bonding Ii Molecular Geometry and Bonding Theories

Gases

Intermolecular Forces and the Physical Properties of Liquids and Solids

Modern Materials

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

Nuclear Chemistry

Environmental Chemistry

Coordination Chemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Organic Chemistry

Filters

How many electrons are there in the 3^rd principal energy level (n = 3)of a phosphorus atom?