Font size
WorksheetsAtomic Structure and Electron Configuration Quiz
Total questions: 20
Worksheet time: 17mins
According to the modern model of the atom, where are electrons most likely found?
Fixed paths around the nucleus
Clouds of positive charge
Specific orbitals within energy levels
Inside the nucleus
Which statement best describes the relationship between an electron’s energy and its distance from the nucleus?
The farther away, the lower the energy
The closer to the nucleus, the higher the energy
The farther away, the higher the energy
Distance has no effect on energy
Which orbital has the lowest energy?
Innermost energy level (n=1)
Second energy level (n=2)
Third energy level (n=3)
Fourth energy level (n=4)
Which orbital has the highest energy?
Innermost energy level (n=1)
Second energy level (n=2)
Third energy level (n=3)
Outermost energy level
What is the definition of a ground state electron configuration?
Electrons occupy random orbitals
Electrons fill the lowest available energy levels first
Electrons fill higher orbitals before lower ones
Electrons are missing from the atom
Which statement about excited state configurations is correct?
Excited states have more electrons than ground state
Excited states have fewer protons than ground state
Excited states have the same total electrons but placed in higher orbitals
Excited states always remove one electron
Which configuration represents an excited state of sodium if the ground state is 2-8-1 (Na)? (Choose exactly two answer)
2-8-1
2-7-2
2-8-2
2-2-8-1
2-8-0-1
Which property remains the same for ground state and excited state configurations of the same atom?
Number of neutrons
Number of electrons
Location of orbitals
Amount of energy
Why can’t 2-7-4 represent an excited state of magnesium? Magnesium is atomic #12 (Choose two answers)
It has the wrong number of neutrons
It changes the number of protons
It has the wrong total number of electrons
It represents a different element
The number of electrons is 13, which cannot be an atom of magnesium
Valence electrons are best defined as the electrons that are:
In the innermost energy level
In the outermost energy level
Shared only in ionic bonds
Equal to the number of neutrons
What determines the chemical reactivity of an element?
Number of neutrons
Number of isotopes
Number of valence electrons
Total mass number
As you move left to right across a period in the periodic table, what pattern is observed in the number of valence electrons?
They decrease
They increase
They remain the same
They change randomly
For an electron to change from ground state to an excited stated it must...
Absorb energy
Release energy
Label the atom
negative
positive
neutral
How many neutrons are there in the most common isotope of Boron? (a)
Label the following items using the image provided.
Which part of an atom is most reliable in giving you the identity of the atom? (Choose the correct column)
An atom in an excited state has an electron configuration of 2-7-2.
Identify the electron configuration of this atom in the ground state.
2-7-2
2-8-1
1-7-3
2-7-3
The electron moves from position 1 to 2. How does the state of the electron shift during this reaction?
The electron becomes less excited.
The electron returns to the ground state.
The electron becomes more excited.
Light is emitted
Organize these options into the right categories
You can leave the classroom often and still get full credit, even if your work isn’t done.
You can ask to go to the bathroom as soon as you walk in.
You can ask about your grade during class.
You don’t have to make up classwork if you miss class for trips or assemblies.
You can just say “sorry” after coming in late and won’t lose points.
You must wait until after the Do Now to ask to leave.
You should not ask personal questions—especially about your grade—during class
You must put missing classwork in the “Missing Work” bin within three days of any absence.
If you come in with a late pass from a teacher, you will not lose points.
Complaining or creating a negative classroom environment won’t affect your grade
Always keep a growth mindset and focus on improving, not complaining.
