Periodic Trends Atomic Radii

Front

As you move across the periodic table, what happens to atomic size?

Back

Atoms tend to get smaller because they have more protons.

Front

What is the trend in reactivity of Group 16 elements as you move up the group?

Back

Reactivity decreases.

Front

Which atom has the largest atomic radius: potassium, rubidium, francium, or cesium?

Back

Francium has the largest atomic radius.

Front

Order the following in terms of size: Anion, Atom, Cation.

Back

Anion > Atom > Cation.

Front

What is the correct order of increasing atomic radii for the elements: Ra, Be, Ca, Rb, H?

Back

H < Be < Ca < Rb < Ra.

Front

Define atomic radius.

Back

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

Front

What is the general trend of atomic radii as you move down a group in the periodic table?

Back

Atomic radii increase as you move down a group.

Front

Explain why atomic size decreases across a period.

Back

Atomic size decreases across a period due to increased nuclear charge, which pulls electrons closer to the nucleus.

Front

What is the relationship between atomic radius and ionization energy?

Back

Generally, as atomic radius decreases, ionization energy increases.

Front

What happens to the atomic radius of an anion compared to its neutral atom?

Back

An anion has a larger atomic radius than its neutral atom due to increased electron-electron repulsion.