Periodic Table

Front

Elements in group 1 are called

Back

Alkali Metals

Front

Who is credited with organizing the first periodic table by arranging the elements by mass?

Back

Mendeleev

Front

On the periodic table, the horizontal rows are called

Back

Periods

Front

On the periodic table, the vertical columns are called

Back

Groups

Front

Elements in group 18 are called

Back

Noble Gases

Front

What is the atomic number?

Back

The number of protons in the nucleus of an atom, which determines the element's identity.

Front

What are transition metals?

Back

Elements found in groups 3-12 of the periodic table, known for their ability to form variable oxidation states.

Front

What is the significance of the periodic law?

Back

The properties of elements are periodic functions of their atomic numbers.

Front

What are metalloids?

Back

Elements that have properties of both metals and nonmetals, found along the zig-zag line on the periodic table.

Front

What are halogens?

Back

Elements in group 17 of the periodic table, known for being highly reactive nonmetals.