WorksheetsSubtopic 2.2: Quantum Mechanics
Total questions: 20
Worksheet time: 10mins
What is meant by orbital?
a 2-d region around nucleus whereby the probability of finding electron is highest
a 3-d region around orbit whereby the probability of finding electron is highest
a 2-d region around nucleus whereby the probability of finding electron is lowest
a 3-d region around nucleus whereby the probability of finding electron is highest
The quantum number that determines the orientation of the orbitals?
azimuthal quantum number (l)
magnitude quantum number (m)
electron spin quantum number (s)
principle quantum number (n)
What are the shapes of 3p orbitals?
Cloverleaf
Spherical
Dumbbell
circular
How many 5d orbitals are there in an atom?
3
5
7
10
What is the maximum number of electrons that can be occupied by an orbital with n= 4, l=2
2
5
6
10
Which orbitals CANNOT exist?
2p
7s
3f
4d
Write a set of quantum numbers for a 4d orbital.
{4,1,0,-1/2}
{4,1,1,+1/2}
{4,2,-2,+1/2}
{4,0,1,-1/2}
Which set of quantum numbers is not allowed?
{3,1,1,-1/2}
{4,2,-1,-1/2}
{2,1,1,+1/2}
{2,1,-2,+1/2}
Identify the subshell in which electrons with the following quantum numbers are found? (n=3, l=2)
3s
3p
3f
3d
How many orbitals (including sub orbitals) are found in a shell with n = 2?
2
3
4
5
The number of electrons with n=4, l=1 is
2
4
6
10
How many electrons can occupy any single subshell orbital?
1
2
6
10
What is the shape of the s orbital?
dumbbell
sphere
clover
flat
What is the shape of the d orbital?
flat
sphere
dumbbell
clover
What is the maximum number of electrons that can be represented by n = 3?
2
6
6
18
How many orbitals are there in the p sublevel?
1
3
5
7
Which orbitals cannot exist
3p
4d
3f
6s
Write a set of quantum numbers for a 4d orbital.
(4,1,0, -1/2)
(4,2,-2, +1/2)
(4,0,2,-1/2)
Which set of Quantum numbers is not allowed
(3,1,1,-1/2)
(2,1,-2,+1/2)
(4,2,-1,-1/2)
How many orbitals (including sub orbitals) are found in a shell with n = 2?
2
3
4
