Which statement best explains why water is not listed as an element on the periodic table?

How were the elements in Dmitri Mendeleev's first periodic table arranged?

How are elements arranged in the modern periodic table?

In developing the periodic table, Dmitri Mendeleev predicted the existence and properties of an undiscovered element he called eka-silicon. Which element was later discovered that matched this prediction?

In Mendeleev’s original periodic table, what primary criterion did he use to arrange the elements?

Where are the metalloids located on the periodic table?

Periodic Table: Classifications — Why isn’t water ($H_{2}O$) on the periodic table?

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

Identify each of the following elements as a metal, a nonmetal, or a metalloid:e. located in Group 8A (18)