4. Atoms and Elements

In the periodic table, what are the names given to the horizontal rows and vertical columns, respectively?

Periodic Table: Classifications — Who is most commonly credited with creating the first widely recognized periodic table?

In the periodic table, the horizontal rows are called what?

What are the horizontal rows on the periodic table called?

In the periodic table, what are the horizontal rows called?

Most elements on the periodic table are classified as which type of element?

Metalloids are located where on the periodic table?

In the modern periodic table, elements are arranged primarily by increasing what property?

In the periodic table, what are the horizontal rows called?

In the periodic table, what is a period?

Elements are organized on the modern periodic table primarily according to which property?

In the periodic table, which element has the greatest number of protons in its nucleus (i.e., the highest atomic number)?

In the periodic table, the majority of elements are classified as which type?

In the periodic table, the horizontal rows are called what?

How are elements on the periodic table arranged?