Molecular orbital theory - Study guides, Class notes & Summaries
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Chem 1311 Exam 5 ACC Professor Rahman Questions With Complete Solutions
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According to VSEPR theory, if there are 2 electron domains on a central atom, they will be arranged such that the angles between the domains are __________. 
 
-120° 
-180° 
-90° 
-109.5° 
-360° correct answer: 180° 
 
An electron domain consists of __________. 
 
a) a nonbonding pair of electrons 
b) a single bond 
c) a multiple bond 
 
-a only 
-b only 
-c only 
-a, b, and c 
-b and c correct answer: a, b, and c 
 
The O-C-O bond angle in the CO₃²⁻ ion is approximately ______...
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TEST BANK FOR ORGANIC CHEMISTRY WITH BIOLOGICAL TOPICS 6th EDITION ISBN : 9781260325294 ALL CHAPTERS INCLUDED.
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TEST BANK FOR ORGANIC 
CHEMISTRY WITH 
BIOLOGICAL TOPICS 6th 
EDITION 
ISBN : 9781260325294 ALL 
CHAPTERS INCLUDED. 
Chapter 1 
1 
MULTIPLE CHOICE QUESTIONS 
Topic: Atomic Orbitals 
1. In quantum mechanics a node (nodal surface or plane) is: 
A) a place where Ψ is negative. 
B) a place where Ψ is positive. 
C) a place where Ψ = 0. 
D) a place where Ψ 
2 
is large. 
E) a place where Ψ 
2 
is negative. 
Ans: C 
Topic: Atomic Orbitals, Molecular Orbitals 
2. When the 1s orbitals of two hydroge...
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CHM 2210 Organic Chemistry TEST BANK
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MULTIPLE CHOICE QUESTIONS 
Topic: Atomic Orbitals 
1. In quantum mechanics a node (nodal surface or plane) is: 
A) a place where Ψ is negative. 
B) a place where Ψ is positive. 
C) a place where Ψ = 0. 
D) a place where Ψ2 
 is large. 
E) a place where Ψ2 
 is negative. 
Ans: C 
Topic: Atomic Orbitals, Molecular Orbitals 
2. When the 1s orbitals of two hydrogen atoms combine to form a hydrogen molecule, 
how many molecular orbitals are formed? 
A) 1 
B) 2 
C) 3 
D) 4 
E) 5 
Ans: B 
Topic: A...
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Chemistry 104 - FINAL EXAM REVIEW NOTECARDS RATED 2024/25 EDITION AID GRADE A+
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Protons 
positively charged particles 
Neutrons 
neutrally charged particles 
Electrons 
negatively charged particles 
Cations 
positively charged ions 
Anions 
negatively charged ions 
Mass Number 
sum of number of protons and neutrons in nucleus of an atom 
Isotope 
two or more forms of the same element (same number of protons) whose atoms differ in number of neutrons, and in mass, with the same atomic number and different mass number. 
Quantitative 
information such as numerical data 
Qualita...
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Chem101 Already Passed Exam Questions and CORRECT Answers
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paramagnetism presence of unpaired electrons 
Examples P, Ti, NO 
Diamagnetism paired electrons 
Examples N2 and O2 
Why does O2 stick between magnetic poles? paramagnetic; has unpaired electrons that 
align with the magnetic field 
Molecular Orbital Theory a theory that accounts for the allowed states for electrons in 
molecules 
Amplitude of wave functions added Bonding
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General Inorganic Chemistry Exam With 100% Correct Answers 2024
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General Inorganic Chemistry Exam With 
100% Correct Answers 2024 
Dalton's Atomic theory - answerElements are composed of tiny indivisible particles called 
atoms. 
Inorganic Chemistry - answerstudy of the synthesis and behavior in inorganic and 
organometallic compounds 
Law of Multiple Proportions - answerIf two elements combine to form more than one 
compound, the ratio of the mass of an element to a fixed mass of the other element is a whole 
number or a simple fraction. 
Law of Conservatio...
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Chemistry Cumulative Exam Questions and Answers 100% Pass
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Chemistry Cumulative Exam Questions 
 
and Answers 100% Pass 
 
In which orbitals are the outermost electrons of carbon found? 
 
s orbital and p orbitals 
 
To demonstrate both physical and chemical transformations in a classroom, which example 
would be most effective? 
 
Igniting a candle 
 
What distinguishes heat from temperature? 
Temperature reflects the degree of thermal energy, whereas heat represents the transfer of 
this energy. 
 
What does a water enthalpy of formation value of -285...
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DAT General Chemistry Questions and Answers | Latest Update | 2024/2025 | Graded A+
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DAT General Chemistry Questions and 
Answers | Latest Update | 2024/2025 | 
 
Graded A+ 
 
How is the periodic table arranged to reflect the properties of elements? 
 The periodic table is arranged by increasing atomic number, with elements grouped into 
columns (groups) and rows (periods) that reflect similar chemical properties and trends in atomic 
structure. 
 
What is the role of a chemical equation in representing a chemical reaction? 
 A chemical equation represents a chemical reaction by...
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CEM 141 MSU Exam 3 UPDATED Exam Questions and CORRECT Answers
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CEM 141 MSU Exam 3 UPDATED Exam 
Questions and CORRECT Answers 
T/F: Covalent bonds are present only when atomic orbitals interact constructively. - Correct 
ANSWER- True. 
Binding in Diamond - Correct ANSWER- Each carbon forms 4 bonds to 4 identical carbons; 
tetrahedral; sp3 
Valence Bond Theory - Correct ANSWER- The idea that covalent bonds are formed when 
orbitals of different atoms overlap. 
T/F: Electrons are localized in molecular orbital. - Correct ANSWER- False
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Chem 1010 Chapter 5 with complete verified solutions(GUARANTEED SUCCESS).
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bond angle 
the angle (in degrees) defined by lines joining the centers of two atoms to a third atom to which they are chemically bonded 
 
 
 
valence-shell electron-pair repulsion theory (VSEPR) 
a model predicting the arrangement of valence electron pairs around a central atom that minimizes their mutual repulsion to produce the lowest energy orientations 
 
 
 
electron-group geometry 
the three-dimensional arrangement of bonding pairs and lone pairs of electrons about a central atom 
 
 
 
...
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