Periodic Trends and Classification

Front

Ionization energy

Back

The energy required to remove an electron from an atom.

Front

Electronegativity

Back

A measure of the ability of an atom to attract electrons in a chemical bond.

Front

Which element has the lowest electronegativity in Period 3?

Back

Na (Sodium)

Front

Which element has the highest electronegativity in the halogens?

Back

F (Fluorine)

Front

Greater Electronegativity: Cl or Al?

Back

Cl (Chlorine)

Front

Greater Electronegativity: N or C?

Back

N (Nitrogen)

Front

Trend of Ionization Energy across a Period

Back

Ionization energy generally increases across a period from left to right.

Front

Trend of Electronegativity down a Group

Back

Electronegativity generally decreases as you move down a group.

Front

What is the relationship between atomic size and ionization energy?

Back

As atomic size increases, ionization energy decreases.

Front

What is the relationship between ionization energy and electronegativity?

Back

Higher ionization energy often correlates with higher electronegativity.