Atomic Radius Trend

Front

What is atomic radius?

Back

The atomic radius is the distance from the nucleus of an atom to the outermost shell of electrons.

Front

Which atom has the largest atomic radius?

Back

Francium.

Front

What is the trend of atomic radius across a period?

Back

Atomic radius decreases across a period.

Front

What is the trend of atomic radius down a group?

Back

Atomic radius increases down a group.

Front

Why do atoms get smaller as you move across a period?

Back

Atoms get smaller because they have more protons, which increases the positive charge and pulls electrons closer to the nucleus.

Front

What happens to atomic radius as you move down a group?

Back

Atomic radius increases because additional electron shells are added.

Front

Which statement correctly identifies a trend in atomic radius?

Back

Atomic radius decreases across a period and increases down a group.

Front

What is the atomic radius of the noble gas in Group 18 with the largest radius?

Back

Radon (Rn).

Front

How does the number of electron shells affect atomic radius?

Back

More electron shells result in a larger atomic radius.

Front

What is the relationship between atomic radius and electronegativity?

Back

Generally, as atomic radius increases, electronegativity decreases.