WorksheetsAtomic Energy Levels
Total questions: 25
Worksheet time: 13hrs 30mins
Which energy level would have electrons with the highest amount of energy?
E1
E2
E3
E4
Which drop in energy levels would emit the highest amount of energy?
E4 to E1
E3 to E1
E2 to E1
All drops would be identical
Which drop in energy levels would emit red light (low energy)?
E4 to E1
E3 to E1
E2 to E1
All drops would produce red light
Why aren't we really touching anything?
The electromagnetic fields of the negatively charged electrons repel other negatively charged electrons in other atoms.
An unknown force surrounds everything preventing anything from touching
The electromagnetic fields of the protons repel other protons in other atoms.
Midi-chloriens
What do you have to add for electrons to become excited and go up an energy level?
Electrons
Protons
Energy
Neutrons
Which of these statements are true about electron shells?
They do not all hold the same number of electrons
The shells occasionally collapse on the nucleus
The electrons orbit like planets around a star.
All of the above
Why are valence electrons so important in chemistry?
Valence electrons are the subatomic particle that interact with other atoms
Valence electrons are the only electrons that enter the nucleus
There are typically more valence electrons than any other type of electron
Valence electrons are the only electrons that can turn into protons
Why is Lithium so reactive?
Alkali metals only need to lose one electron to have an octet.
Lithium is very small.
Lithium has a large proton to neutron ratio.
Lithium is a large unstable atom.
Why is Fluorine so reactive?
Halogens only need to gain one electron to have an octet.
Fluorine is very small.
Fluorine has a large proton to neutron ratio.
Fluorine is a large unstable atom.
A region of space around the atomic nucleus in which electrons may reside.
Orbital
Atomic Nucleus
Neutron
Nucleon
lithium
2 energy levels
helium
1 energy level
aluminum
3 energy levels
bromine
4 energy levels
strontium
5 energy levels
A
nucleus
B
2nd Energy Level
C
Electron
D
1st Energy Level
Match the following concerning electrons in atoms when energy is gained or lost
atom gains energy, electrons
move from lower to higher energy level
atom loses energy, electrons
move from higher to lower energy level
energy is released in the form of a
photon
highest energy
energy level farthest from the nucleus
lowest energy
energy level closest from the nucleus
For an electron to move from an energy level far from the nucleus to an energy level close to the nucleus it would need to (a) energy.
For an electron to move from an energy level close to the nucleus to an energy level far from the nucleus it would need to (a) energy.
When an electron returns to ground state from an excited state, the atom will (a)
When an electron (a) energy, the electron moves to a (b) energy level/orbital.
Electrons are organized in orbitals from (a) energy to (b) energy.
Determine how many electrons each energy level can hold:
2
8
18
A max of (a) electrons can fit into the first ring,
Periods tell us the number of (a) on a neutral atom of the element.
Match the following
Group Number
Number of Valence electrons
Period Number
Number of energy levels
Atomic Number
Number of protons
number of protons
Number of electrons
A line spectrum is produced when an electron moves from one energy level
into the nucleus
to a higher energy level
to another position in the same sublevel
to a lower energy level
