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WorksheetsQuiz 5.2 Electronic Configuration
Total questions: 47
Worksheet time: 53mins
Identify the rule that is being violated
Aufbau's Principle
Hund's Rule
Pauli's Exclusion Principle
Heisenberg uncertainty principle
What is incorrect about this orbital diagram?
Both arrows in the filled 2p box should be pointing the same direction
There is nothing incorrect with this diagram
In the there should only be 1 arrow in the first 2p box and one in the 2nd 2p box
All the arrows should be pointing the same direction.
All orbitals of equal energy (degenerate orbitals) are occupied by one electron before any single orbital is occupied by a second electron.
Aufbau Principle
Pauli's Exclusion Principle
Hund’s Rule
Core Notation
No two electrons in the same atom can have the same four quantum numbers.
Aufbau Principle
Pauli's Exclusion Principle
Hund’s Rule
Noble gas notation
1s22s22p63s23p64s23d10
X has 10 electrons. What is the the possible set of quantum number of the 10th electron?
(n=2, l= 1, m=0, s=+1/2)
(n=2, l= 0, m=0, s=+1/2)
(n=1, l= 0, m=0, s=-1/2)
(n=2, l= 1, m=+2, s=+1/2)
Which one of the following is the electronic configuration of the bromine atom?
1s22s22p63s23p63d104s14p6
1s22s22p63s23p63d104s24p7
1s22s22p63s23p63d104s24p5
1s22s22p63s23p63d104s24p6
Which one of the following is the maximum number of atomic orbitals having a principal quantum number of two?
2
4
8
9
Which one of the following does not represent the electronic configuration of an atom in its ground state?
1s2 2s2 2p3
1s2 2s2 2p4
1s2 2s2 2p6 3s1
1s2 2s2 2p6 3d1
The vanadium atom (atomic number 23) in its ground state has the electronic configuration:
1s2 2s2 2p6 3s2 3p6 3d3 4s2
1s2 2s2 2p6 3s2 3p6 3d2 4s3
1s2 2s2 2p6 3s2 3p6 3d1 4s2 4p2
1s2 2s2 2p6 3s2 3p6 3d2 4s2 4p1
What electron configuration matches an oxygen ion? (Z=8)
1s22s22p63s2, 3p64s23d104p5
1s22s22p4
1s22s22p6
1s22s22p63s23p64s23d1
Write the electronic configuration for sodium Na (Z=11)
1s2 2s2 2p6
1s2 2s2 2p6 3s2
1s2 2s2 2p6 3s1
1s2 2s2 2p6 3s2 3p4
Determine the element that has valence electron 3s23p1
(Z of Na = 11, Al = 13, Cl = 17, Mg = 12)
Na
Al
Cl
Mg
Electron must be arrange from lowest energy to highest energy.
State the rule/principle?
Hund's Rule
Pauli Exclusion Principle
Aufbau Principle
Zuhaizi Principle
All ions matches with this electronic configuration.Except?
1s22s22p63s23p6
Al3+
Cl-
S2-
Ca2+
1s22s22p63s2
In 1s2, the 1 means
there is 1 electron
the electrons are in the 1st energy level
the shape is circular
there is a -1 charge
In 1s2, the s means
the shape of the orbital is circular
the shape of the orbital is figure 8
there are six electrons
it is neutral
In 1s2, the 2 means
there are 2 electrons in this level
it is the 2nd energy level
there is a +2 charge
there is a -2 charge
Which orbital shows a violation of the Pauli Exclusion Principle?
A
B
C
D
How many electrons can a d orbital hold?
10
7
14
6
Which is the electron configuration of 34Se??
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p4
1s2 2s2 2p6 3s2 3p6 3d7 4p6
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6
1s2 2s2 2p6 3s2 3p6 3d2 4s2 3d10 4p4
No of unpaired electrons in Mn2+ ion
2
3
4
5
How many electrons can the third shell have?
Two
Eight
Five
Three
What is the shape of a p orbital?
sphere
it's just too complex to think about it
dumbbell
I don't know this stuff.
Which two would have the same shape?
2p
2s
3d
1s
According to Aufbau Principle, electrons are filled into 4s orbital before 3d orbital.
When removing the electrons, the electron needs to be removed from which sub-shell first?
4s
3d
3p
1s
What electron configuration matches an oxygen ion? (Z=8)
1s22s22p63s2, 3p64s23d104p5
1s22s22p4
1s22s22p6
1s22s22p63s23p64s23d1
Which quantum number defines the orientation of orbital?
s
l
m
n
Which set of quantum numbers uniquely defines one of the electrons in an atomic orbital with n = 2 and l = 0.
(2,0,+1,+1)
(2,0,+1,+1/2)
(2,0,0,+1)
(2,0,0,+1/2)
Which of the following sub-shells contains only one orbital?
4d
6p
7s
5d
What is the value of azimuthal quantum number, l for d orbital?
0
1
2
3
The magnetic quantum number (m) refers to
Orientation of orbital
Direction of electron spin
Shape of orbital
Energy level of the electron
Can orbital 3f exist?
Yes
No
Maybe
Probably
Which of the following statement is correct for an electron that has the principal quantum number, n = 4 and m = -2.
The electron may be in a p orbital
The electron may be in a d orbital
The electron is in the second energy level
The electron must have a spin quantum number, s = -1/2
Which of the following orbital does not have the same shape?
dxy
dyz
dx2-y2
dz2
Write the set quantum number for 3p.
(3, 0, 0, +1/2)
(3, 1, 0, +1/2)
(3, 2, 0, +1/2)
(3, 0, 1, +1/2)
Which of the following element has this orbital in its electronic configuration.
Ar (Z=18)
K (Z=19)
Ca (Z=20)
Sc (Z=21)
What is the symbol for angular quantum number?
n
l
m
s
How many electrons if l=1 for electronic configuration of Mg (Z=12)
12
6
3
2
The X3+ ion has proton number of 26. Choose the correct electron configuration for X3+ ion. (The letter X3+ is not the actual symbol of the ion)
1s2 2s2 2p6 3s2 3p6 3d5
1s2 2s2 2p6 3s2 3p6 3d3 4s2
1s2 2s2 2p6 3s2 3p6 3d6 4s2
1s2 2s2 2p6 3s2 3p6 3d8
The highest electron in atom J has the quantum number n = 3, l = 1, ml = -1. Choose the incorrect statement about J. (The letter J is not the actual symbol of the element)
J has 13 protons
J can form J+ ion
J p-block element
J is a metal
Which of the following electron distribution in a valence shell of carbon?
How many electrons if l=1 for electronic configuration of Mg (Z=12)
12
6
3
2
