Organizing the Elements

Mendeleev arranged his periodic table in order of increasing atomic number.

The rows in the periodic table are called periods.

• True

• False

moving across the periodic table from left to right, one finds, in order, metals, then gases, then nonmetals.

Another name for a period is a family.

On the periodic table, elements in the same column have similar properties.

• True

• False

An element's ________________can be predicted from its location on the periodic table.

The average mass of all the isotopes of an element is called the _____________________.

the modern periodic table is arranged in order of increasing _________________________.

An element with atomic number 10 is located to the _______________________ of an element with atomic number 9.

Information found on the periodic table for each element include its atomic number,_______________________________,name, and atomic mass.