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WorksheetsElectrons in Atoms Test
Total questions: 29
Worksheet time: 2hrs 39mins
Which atom in the ground state has three unpaired electrons in its outermost principal energy level?
Li
B
N
Ne
What is the total number of valence electrons in an atom with the electron configuration 1s22s22p63s23p3?
6
2
3
5
Which atom in the ground state has only 3 electrons in the 3p sublevel?
phosphorus
potassium
argon
aluminum
The total number of sublevels in the fourth principal energy level of an atom is
1
2
3
4
A maximum of 6 electrons can occupy
an s orbital
an s sublevel
a p orbital
a p sublevel
Which is a correct description of the shape and spatial orientation of the p orbitals in an atom?
All have the same shape but a different orientation.
All have the same shape and the same orientation.
All have a different shape and a different orientation.
All have a different shape but the same orientation.
What is the total number of orbitals in a d sublevel
1
3
5
7
Atoms are neutral because they
have an equal number of charged and noncharged particles.
have neutrons in their nuclei.
have an equal number of electrons and protons.
have an equal number of neutrons and protons.
An element’s atomic number is equal to its number of
protons
neutrons
valence electrons
protons and neutrons
Chris the Chemist was working in the lab, and put copper chloride into a Bunsen burner flame. As soon as he put it in the flame, it began to emit a green color. Which of these BEST describes this outcome?
The heat split the nucleus and created a new element.
As the copper chloride was heated, electrons were turned into neutrons.
As the electrons moved to a higher energy level, a photon of light is emitted.
When excited electrons return back to the ground state, a photon of light is emitted.
The nucleus of an atom consists of 8 protons and 6 neutrons. The total number of electrons present in a neutral atom of this element is
6
8
2
14
Which subatomic particle is negative?
proton
neutron
electron
nucleus
According to Bohr's theory, an electron's path around the nucleus defines its
electric charge
atomic mass
energy level
speed
Which statement about the modern model of the atom is not true?
Electrons can be found between energy levels.
Electrons can be found only in certain energy levels.
The precise location of electrons cannot be predicted.
Electrons are most likely to be found in orbitals.
How is the electron configuration of neutral atoms related to the atom’s chemical properties?
Chemical properties of atoms are shown through the electron configuration due to interactions of protons with other atoms.
An atom’s properties can be explained through the electron configuration & structure of the nucleus & its interactions.
Electron configuration predicts the crystalline structure of the atom & shows the pattern formed as the atoms join together.
The atom's electron configuration shows the number of valence electrons present and predicts the number and types of bonds the atom will form.
A packet of light energy that carries a quantum of energy.
ground state
Hund's Rule
Atomic Emission Spectrum
photon
Heisenberg Uncertainty Principle
The state when all electrons of an atom are in the lowest possible energy levels.
ground state
Hund's Rule
Atomic Emission Spectrum
photon
Heisenberg Uncertainty Principle
The theory that it is impossible to know both the position and speed of an electron simultaneously.
ground state
Hund's Rule
Atomic Emission Spectrum
photon
Heisenberg Uncertainty Principle
The theory that, within a sublevel, electrons prefer to occupy their own orbital. One in each room before pairing up.
ground state
Hund's Rule
Atomic Emission Spectrum
photon
Heisenberg Uncertainty Principle
Set of frequencies and colored lines of the electromagnetic spectrum emitted by the electrons of an element
ground state
Hund's Rule
Atomic Emission Spectrum
photon
Heisenberg Uncertainty Principle
The theory that electrons fill the lowest energy orbitals first.
full energy level or full shell
Aufbau Principle
valence electrons
protons, neutrons
orbital
A term describing the outermost electrons in an atom.
full energy level or full shell
Aufbau Principle
valence electrons
protons, neutrons
orbital
The mass of the atom is determined by the ___________ added to the _______________.
full energy level or full shell
Aufbau Principle
valence electrons
protons, neutrons
orbital
The most stable type of electron configuration.
full energy level or full shell
Aufbau Principle
valence electrons
protons, neutrons
orbital
A three-dimensional region in space where an electron is likely to exist.
full energy level or full shell
Aufbau Principle
valence electrons
protons, neutrons
orbital
An explanation used by Schrodinger to explain the quantum mechanical model of the atom and behavior of electrons. A cat is hypothetically sealed in a box with a vial of poison. Until we look in the box, we don’t know if the cat is alive or dead so we can think of the cat as both alive AND dead at the same time in superposition. Observing collapses the paradox into 1 reality.
atom
Pauli Exclusion Principle
excited state
protons, electrons
Cat Paradox
When an electron jumps up to a higher energy level, the atom is in its ___.
atom
Pauli Exclusion Principle
excited state
protons, electrons
Cat Paradox
A neutral atoms must contain the same number of __________ and _____________.
atom
Pauli Exclusion Principle
excited state
protons, electrons
Cat Paradox
The principle that states that only 2 electrons can occupy an orbital and only if they are of opposite spin.
atom
Pauli Exclusion Principle
excited state
protons, electrons
Cat Paradox
