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

How does atomic radius change across a period in the periodic table?

Back

Atomic radius decreases across a period from left to right.

Front

What causes the decrease in atomic radius across a period?

Back

The increase in the number of protons in the nucleus pulls the electrons closer, reducing the atomic size.

Front

How does atomic radius change down a group in the periodic table?

Back

Atomic radius increases as you move down a group.

Front

What is the reason for the increase in atomic radius down a group?

Back

Atoms have more energy levels, which increases the distance between the nucleus and the outermost electrons.

Front

What is a cation?

Back

A cation is a positively charged ion formed when an atom loses one or more electrons.

Front

What is an anion?

Back

An anion is a negatively charged ion formed when an atom gains one or more electrons.

Front

Which element has the smallest atomic radius: Li, O, C, F?

Back

F (Fluorine) has the smallest atomic radius.

Front

What is the trend of atomic radius in relation to metallic character?

Back

As atomic radius increases, metallic character also increases.

Front

What is the relationship between atomic radius and ionization energy?

Back

As atomic radius decreases, ionization energy increases.