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Worksheetselectronic configuration set 1
Total questions: 19
Worksheet time: 11mins
Principle Quantum number gives idea about the following ?
Determines the size & energy of orbital
Identifies the shell
Gives an idea about number of shell & electrons
All of these
Values of Azimuthal Quantum number can be calculated by following formula
2n2
0 to (n – 1)
–l to +l
(2l + 1)
For l = 3, possible values of (m) are
7
6
5
4
Orientation of spin can be calculated by
Principle Quantum Number
Azimuthal Quantum Number
Magnetic Quantum Number
Spin Quantum Number
How many electrons can be accommodated in s – subshell
0
1
2
3
Number of electrons in s, p, d subshell respectively are
10, 6,
2, 14, 6
6, 10, 14
2, 6, 10
In 4d5 , d represents
Shell
Subshell
Number of electrons
None of these
Electronic configuration of boron (proton number: 5)
1s2 3s2 2p1
1s2 2s2 2p1
1s2 2s5 2p1
1s1 2s2 2p2
Electronic configuration of Neon (proton number: 10)
1s1 2s2 2p7
2s2 2p2 2p6
1s4 2s4 2p2
1s2 2s2 2p6
When several orbital's of equal energy are available, the electron first fills singly before pairing in any orbital's, this statement was given by
Hund’s Rule
Pauli’s Excusive Principle
Aufbau Principle
None of these
Two electrons in an atom cannot have the same set of all the four quantum numbers, this statement was given by
Hund’s Rule
Pauli’s Excusive Principle
Aufbau Principle
None of these
Identify the allowed transitions from the following
n = 1, l = 3, m = 0, s = + ½
n = 1, l = 0, m = 2, s = + ½
n = 1, l = 0, m = 0, s = 1
n = 1, l = 0, m = 0, s = + ½
What is the Aufbau principle?
Within an energy level, s orbitals are the lowest energy, followed by p, d and then f. F orbitals are the highest energy for that level.
All three.
The lower the principal quantum number (n) the lower the energy.
The Aufbau Principle states that electrons enter the lowest energy orbitals first.
Identify the rule that is being violated
Aufbau's Principle
Pauli's Exclusion Principle
Hund's Rule
Heisenberg uncertainty principle
What is incorrect about this orbital diagram?
Both arrows in the filled 2p box should be pointing the same direction
There should only be 1 arrow in the first 2p box and one in the 2nd 2p box
There is nothing incorrect with this diagram
All the arrows should be pointing the same direction.
Which rule is violated in the following orbital diagrams?
Hund's Rule
Pauli's Exclusion Principle
Aufbau Principle
Which of the following describes the shape of the orbital?
principal quantum number
azimuthal quantum number
spin quantum number
magnetic quantum number
Which quantum number describes the behavior of a specific electron and completes the description of electrons in atoms?
n
ml
l
ms
Which set of quantum numbers is incorrect?
1 , 1, 0 + 1/2
3 , 2 , -1 , -1/2
2 , 0 , 0 , -1/2
4, 3, 2, +1/2
