5.2 The Modern Periodic Table Slides

The number of protons in the nucleus

The number of neutrons in the nucleus

The number of electrons in the outer shell

The total number of particles in the atom

A horizontal row of elements

A vertical column of elements

A group of elements with similar properties

A set of elements with the same atomic mass

Each group is a vertical column and members have similar chemical properties.

Each group is a horizontal row and members have different chemical properties.

Group number equals the number of protons in the atom.

Group number equals the atomic mass of the atom.

Group number equals the number of electrons in the outermost energy level.

All elements in a group have the same number of outermost electrons.

Group number equals the number of protons in the atom.

Elements in the same group have similar chemical properties.

Chlorine-35

Chlorine-37

Both contribute equally

Neither contributes

Good conductors of electric current and heat

Solids at room temperature (except mercury)

Malleable

Brittle

Nonmetals are good conductors of heat and electricity.

Nonmetals have properties opposite to those of metals.

Nonmetals are always solid at room temperature.

Nonmetals are malleable and ductile.

On the far left side

On the far right side

Between metals and nonmetals

Scattered randomly

Silicon, Germanium, Antimony, Tellurium

Oxygen, Sulfur, Bromine, Carbon

Sodium, Potassium, Calcium, Magnesium

Fluorine, Chlorine, Iodine, Bromine

Atomic number

Atomic mass

Element symbol

Number of neutrons