Unit 2- Periodic Trends FINAL Review

Front

What is ionization energy?

Back

The energy required to remove an electron from an atom in its gaseous state.

Front

How does ionization energy change across a period?

Back

Ionization energy increases from left to right across a period due to increasing nuclear charge.

Front

What is the shielding effect?

Back

The phenomenon where inner electrons shield outer electrons from the full effect of the nuclear charge.

Front

How does the shielding effect change across a period?

Back

The shielding effect stays relatively constant as you move across a period.

Front

What happens to atomic radius as you move across a period?

Back

Atomic radius decreases due to increased nuclear charge pulling electrons closer.

Front

What is electronegativity?

Back

A measure of the tendency of an atom to attract a bonding pair of electrons.

Front

How does electronegativity change across a period?

Back

Electronegativity increases from left to right across a period.

Front

What is the trend of atomic radius in a group?

Back

Atomic radius increases as you move down a group due to the addition of energy levels.

Front

Which element has the largest atomic radius in Group 18?

Back

Radon (Rn) has the largest atomic radius in Group 18.

Front

What is the relationship between ionization energy and atomic radius?

Back

Generally, as atomic radius decreases, ionization energy increases.