WorksheetsLecture Week 4_2.3 Electronic Configuration
Total questions: 18
Worksheet time: 28mins
The electron fills in the orbital from lower to the higher energy of orbital. State the name of rule used for the statement above.
Which of the following statements regarding electronic orbitals is/are correct?
Each p-orbital can hold a maximum of six electrons.
The 3p-orbitals have a higher energy level than the 3s-orbital.
The three 3p-orbitals have slightly different energy levels.
The 1s-orbital has the same size and shape as the 2s-orbital.
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
What electron configuration matches an sulphur atom?
(Z =16)
1s22s22p63s2, 3p64s23d104p5
1s22s22p4
1s22s22p6 3s2 3p4
1s22s22p63s23p64s23d1
No two electrons in the same orbital can have the same set of four quantum numbers (n,l,m,s)
Aufbau principle
Pauli exclusion principle
Hund’s rule
Noble gas notation
Which orbital shows a violation of the Pauli Exclusion Principle?
A
B
C
D
Which of the following is the degenerate orbitals
4p orbitals
3s orbital
4s orbital
3d orbitals
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 2p orbital there should only be 1 arrow in the first 2p box and another one arrow in the 2nd 2p box where both arrow pointing upward
All the arrows should be pointing the same direction.
Identify the rule that is being violated
Aufbau's Principle
Hund's Rule
Pauli's Exclusion Principle
Heisenberg uncertainty principle
Which rule is violated in the following orbital diagrams?
Hund's Rule
Aufbau Principle
Pauli's Exclusion Principle
Which rule is violated in the following orbital diagrams?
Aufbau Principle
Hund's Rule
Pauli's Exclusion Principle
State the valence electronic configuration for Potassium atom (Z= 19)
1s2 2s2 2p63s2 3p6 4s1
3s2
3s2 3p6 4s1
3s2 3p6
4s1
The electron configuration of an atom is 1s22s22p2. The number of valence electrons in the atom is
4
2
6
State the valence electronic configuration for Germanium atom (Z=25 )
1s2 2s2 2p63s2 3p6 4s2 3d6 4s2 3d10 4p2
4p2
3d10 4p2
4s2 3d10 4p2
4s2 4p2
An atom has the electronic configuration of 1s2 2s2 2p6 3s2 3p6 4s2 3d3 . Choose the number of valence electrons that belongs to this atom.
2
11
5
9
State the valence electronic configuration for Manganese atom (Z=25 )
1s2 2s2 2p63s2 3p6 4s2 3d5
4s2
3s2 3p6 3d5
3s2 3p6
4s2 3d5
