Atomic Size
Stability
Electrostatic Forces
CPEG
100
The measure of the atomic size
What is atomic radius?
100
The distance between the nuclei of atoms.
What is the internuclear distance?
100
The forces between electrons and protons (between opposite charges).
What are attractive forces?
100
A CPEG diagram shows the relationship between ______ and __________
What are internuclear distance and chemical potential energy ?
200
The unit for atomic radius
What is picometer (pm)?
200
The internuclear distance where the atoms are stable and the electrostatic forces cancel out.
What is the bond length?
200
The forces between protons or between electrons (between "like" charges).
What are repulsive forces?
200
The more negative the energy, the more energy required to _______ the atoms ("break the bond")
What is "separate"?
300
Approximately the sum of atomic radii.
What is bond length?
300
The potential energy is zero when the atoms are _____ apart
What is far?
300
The type of forces that dominate when atoms are far apart.
What are attractive forces?
300
On a CPEG, the variable that determines the strength and stability of a bond.
What is the amount of chemical potential energy in the bond?
400
The cause of increasing atomic size down a group/column in the periodic table
What is the number of electrons (or energy levels)?
400
Atoms in a bond will most likely be found at this energy level.
What is the lowest energy level or energy minimum?
400
The type of forces that dominate when atoms are closer.
What are repulsive forces?
400
The (black/ red)_____ atoms require less energy to separate
What are black atoms?
500
The cause of decreasing atomic size across a period/ row in the periodic table.
What is the effective nuclear charge? (or what is the effect of the increasing number of protons?)
500
The unit used to measure atomic radii, and internuclear distance.
What is picometer (pm)?
500
At the energy minimum of a CPEG (Chemical Potential Energy Graph), the attractive and repulsive forces between atoms are ______ and ________.
What are equal and opposite?
500
The (black/red)______ atoms release more energy when forming a molecular bond.
What are red atoms?