Test
Quantum Theory Test
Preguntas del test (30)
1_______ is a shorthand notation showing the probable location of electrons in an atom.
- AQuantum Number
- BElectron Configuration
- CRepulsion
- DAll the Above
2True or False?
Pauli Exclusion Principle states that 1.) No two electrons in the same atom can have the same set of 4 quantum numbers. 2.) Two electrons in the same orbital must have opposite spins.- AVerdadero
- BFalso
3When using letter designation, which letter do we begin with?
- AS
- BP
- CD
- DK
4The Angular Momentum Quantum Number indicates
- AThe number of sublevels possible in a mainshell
- BThe orbital in which the electron is located
- CThe sublevel in which the electron is located
- Ddenotes the mainshell location in an electron
5True or False?
The maximum number of electrons in each sublevel corresponds to the number of vertical columns in the respective block on the periodic table.- AVerdadero
- BFalso
6True or False?
A region of space defined by a wave function that can hold two electrons is known as nucleus- AVerdadero
- BFalso
7______ indicates the orbital in which the electron is located
- ASpin Number
- BMagnetic Quantum Number
- COrbital Number
- DAngular Momentum Quantum Number
8A p sublevel can hold ____ electrons
- A4
- B7
- C3
- D6
9What is the formula used to indicate the maximum numbers of electrons in a mainshell?
- A2n^2
- B2n
- C2n^3
- D2n^4
10State the correct sublevel number with sublevel letter designations
- A1-s
2-p
3-d
4-f - B0-s
1-p
2-d
3-f - C0-f
1-d
2-p
3-s - D0
1
2
3
- A1-s
11True or False ?
Aufbau Principle states electrons fill orbitals from low energy to high energy.- AVerdadero
- BFalso
12True or False?
Pauli Exclusion Principle states that each orbital in a sublevel must have one electron before they begin to pair up- AVerdadero
- BFalso
13Which of the following principles states it is fundamentally impossible to know precisely both the velocity and position of an electron at the same time
- AHeisenberg Uncertainty Principle
- BAufbau Principle
- CPauli Exclusion Principle
- DOctet Rule
14Which of the following follows the Pauli Exclusion Principle?
- ANo two electrons in the same atom can have the same set of 4 quantum numbers
- BEach orbital in a sublevel must have one electron before they begin to pair up
- CTwo electrons in the same orbital must have opposite spins
- DAtoms are most stable with eight electrons in the outer shell(valence shell)
15True or False?
The Octet Rule states that atoms are most stable with eight electrons in the outer shell.- AVerdadero
- BFalso
16True or False?
Spin Quantum Number indicates the direction of spin of the electron- AVerdadero
- BFalso
17What describes how a property changes going across a period or down a group
- Aperiod trend
- Bionization energy
- Catomic radius
- Dshielding effect
18True or False?
Periodic Trends can be explained in terms of Coulomb's Law- AVerdadero
- BFalso
19______ 1/2 the distance between the nuclei of diatomic or the distance between the nucleus of an atom and the 90% probability surface of the electron cloud.
- AIonization Energy
- BCoulomb's Law
- CPeriodic Trend
- DAtomic radius
20True or False?
Electron affinity is the energy required to remove the least tightly held e- from an atom.- AVerdadero
- BFalso
21True or False?
Atomic Radius decreases across a period and increases down a group- AVerdadero
- BFalso
22_______ __________ occurs when core electrons shield the valence electrons from the pull of the nucleus.
- AShielding Effect
- BGravitational Pull
- CIonization Energy
- DAtomic Radius
23What is the Periodic Trend for Ionization Energy?
- AIncreases across a period and down a group
- BDecreases across a period and increases down a group
- CIncreases across a period and decreases down a group
- DDecreases both across a period and down a group
24What is the first exception in the general ionization trend across a period?
- A1st exception occurs at group 3A. There is a small decrease in ionization energy because the e- being removed is in a p-sublevel that is higher energy than the e- being removed from the s-sublevel of the proceeding element.
- B1st exception occurs at 2A. There is a small decrease in ionization energy because the e- being removed is in a p-sublevel that is higher energy than the e- being removed from the s-sublevel of the proceeding element.
- C1st exception occurs at 3A. There is an increase in IE because the e- being removed is paired e- that is being repelled by the other e- in the orbital.
- D1st exception occurs at 5A. There is a small decrease in IE because the e- being removed is paired e- that is being repelled by the other e- in the orbital.
25Cation are positively charged ion while anions are negatively charged ions
- AVerdadero
- BFalso
26True or False?
Electron Affinity are used to compare the attraction two atoms for a pair of shared electrons in a covalent bond.- AVerdadero
- BFalso
27What are the periodic trends in electronegativity?
- AIncreases across a period and decreases down a group
- BDecreases across a period and increases down a group
- CDecreases both across a period and down a group
- DIncreases both across a period and down a group.
28_______ _______ is the energy given off when a gaseous atom accepts an e-.
- AShielding Effect
- BElectron Affinity
- CIonization Energy
- DAtomic Radius
29What are the Periodic Trends for Ionic Radius?
- AIonic radius decreases down a group and increases across a period
- BIonic Radius increases down a group and decreases across a period to Group 5A where it increases and then decreases again.
- CIonic Radius increases both down a group and across a period
- DIonic Radius decreases both down a group and across a period
30True or False?
Anions are larger than the atom they from from because of the gain of an electron- AVerdadero
- BFalso
Información
- Descripción
- A quick test going over the Quantum Theory
- Autor
- Usuario eliminado
- Idioma
- English
- Visitas
- 12
- Historial
- Creado el 9 dic 2019 · actualizado el 9 dic 2019
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