Columns and Rows of the Periodic Table

The number at the top of each square on the periodic table is the ...

• atomic number

• atomic mass

• Chemical Symbol

• Element Name

Tags

NGSS.MS-PS1-1

Elements that occur in vertical columns on the periodic table.

• Neutron

• metalloids (semimetals)

• groups

• Proton

Vertical columns on the periodic table are called ___?

• groups

• periods

• rows

• families

The periodic table is a chart that organizes the elements based on their atomic properties. Elements in the periodic table are organized according to the periodic law. The periodic law states that chemical and physical properties of elements are periodic functions of their atomic numbers (the number of protons in the nucleus). As the atomic number of elements increases, different elements display similar characteristics at regular intervals.

Periodic law states that elements are arranged _______________________________________________________________.

• in alphabetical order.

• from largest to smallest.

• as periodic functions of their atomic numbers.

• there is no rhyme or reason.

In 1869, Dmitri Mendeleev developed the first periodic table, organizing the elements according to atomic weight. When he ordered the elements, he noticed that there were patterns of repeating properties. The modern periodic table sequences elements from left to right by atomic number.

This was the first person to organize a periodic table.

• Neils Bohr

• Dmitri Mendeleev

• Democritus

• Ernest Rutherford

Rows on the periodic table are called ___________.

• Periods

• Sentences

• Fences

The periodic table is mostly made up of what type of element?

• Metals

• Nonmetals

• Metalloids

How are elements on the periodic table arranged by?

• in alphabetic order

• simular physical & chemical properties

• their symbols

• Just simular physical properties

Elements in the same group have : (2 correct answers)

• Similar chemical properties

• Similar names

• Same number of outer (valence) electrons)

• The same number of protons

All of the COLUMNS on the Periodic Table are called?

• Periods

• Rows

• Groups

• Lines