Please enter something

Periodic Trends/Properties

question

Atomic Radii
answer

Half the distance between nuclei of identical atoms bonded together
question

Radii Trend
answer

As you go across a period, the radii decreases
As you go down a group, the radii increases
question

Ionization Energy
answer

Energy required to remove one electron from a neutral atom
question

Ionization Energy Trend
answer

As you go across a period, the energy increases
As you go down a group, the energy decreases
question

Electron Affinity
answer

Energy change when an electron is gained
question

Electron Affinity Trend
answer

As you go across a period, electrons are gained more easily
As you go down a group, electrons are harder to gain
—(across = higher neg number, gain = lower neg number)—
question

Electronegativity
answer

Measure of an atom in a chemical compound to attract electrons from another atom in a compound
question

Electronegativity Trend
answer

Across a period, increase
Down a group, decrease or remain the same