Periodic Trends

Front

What is the trend in atomic radius as you move down a group in the periodic table?

Back

Atomic radius increases as you move down a group because more electron shells (energy levels) are added.

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 a vertical column in the periodic table called?

Back

A vertical column in the periodic table is called a group or family.

Front

Which halogen has the smallest atomic radius?

Back

Fluorine (F) has the smallest atomic radius among the halogens.

Front

What is the general trend in atomic radius across a period from left to right?

Back

Atomic radius generally decreases from left to right across a period due to increasing nuclear charge.

Front

How does effective nuclear charge affect atomic radius?

Back

Increased effective nuclear charge pulls electrons closer to the nucleus, resulting in a smaller atomic radius.

Front

What is the relationship between atomic radius and ionization energy?

Back

Generally, as atomic radius decreases, ionization energy increases because electrons are held more tightly by the nucleus.

Front

What is the trend in electronegativity as you move across a period?

Back

Electronegativity generally increases as you move from left to right across a period.

Front

What is the trend in ionization energy as you move down a group?

Back

Ionization energy generally decreases as you move down a group due to increased atomic radius and shielding effect.

Front

What is the shielding effect?

Back

The shielding effect is the phenomenon where inner shell electrons reduce the effective nuclear charge felt by outer shell electrons.