Periodicity

Front

Where are the alkali metals located on the periodic table?

Back

Far left column.

Front

What are the energies of electrons as they orbit the nucleus of an atom called?

Back

Energy levels.

Front

Elements in the same group or family have _____________.

Back

The same number of valence electrons and similar properties.

Front

Which family is the most reactive metals?

Back

Alkali Metals (Group 1).

Front

Boron, Aluminum, and Gallium are:

Back

In the same group.

Front

What is the periodic law?

Back

The properties of elements are a periodic function of their atomic numbers.

Front

What do the columns in the periodic table represent?

Back

Groups or families of elements with similar properties.

Front

What do the rows in the periodic table represent?

Back

Periods, indicating the number of energy levels in the atoms.

Front

What are valence electrons?

Back

Electrons in the outermost shell of an atom that determine its chemical properties.

Front

What is the significance of the noble gases?

Back

They are inert and have a full valence shell, making them very stable.