Chapter 5 Lesson 3- Periodic Trends

Atomic Radius

Ionic Radius

Ionization Energy

Melting Point

For metals, it is half the distance between adjacent nuclei in a crystal.

For nonmetals, it is half the distance between nuclei of bonded atoms.

For all elements, it is the same method regardless of type.

Atomic radius is not measurable for nonmetals.

It decreases

It increases

It stays the same

It fluctuates unpredictably

It increases

It decreases

It stays the same

It first increases then decreases

To acquire a full set of eight valence electrons

To become heavier

To increase their atomic number

To become radioactive

Losing an electron results in a positive charge and a smaller radius

Gaining an electron results in a negative charge and a larger radius

Losing an electron results in a negative charge and a larger radius

Gaining an electron results in a positive charge and a smaller radius

The radius increases

The radius decreases

The radius stays the same

The radius fluctuates randomly

Ionic radius generally increases from top to bottom in a group.

Ionic radius generally decreases from top to bottom in a group.

Ionic radius remains constant in a group.

Ionic radius increases from left to right in a period.

It generally increases from left to right.

It generally decreases from left to right.

It remains constant across a period.

It increases from top to bottom.

Fluorine

Oxygen

Chlorine

Nitrogen