Using the Periodic Table An Introduction

What is the Periodic Table? It is a list of elements. The arrangement of the elements is a guide to the chemistry of those elements. It is also a guide to the properties of those elements.

The Arrangement of the Table The Table has vertical columns called “groups” or “families.”

The Arrangement of the Table The Table has vertical columns called “groups” or “families.”

The Arrangement of the Table The Table has vertical columns called “groups” or “families.” Alkali metal group

The Arrangement of the Table The Table has vertical columns called “groups” or “families.” Alkaline earth group

The Arrangement of the Table The Table has vertical columns called “groups” or “families.” Halogen group

The Arrangement of the Table The Table has vertical columns called “groups” or “families.” Noble gas group

The Arrangement of the Table The Table has vertical columns called “groups” or “families.” Each of these groups has its own particular chemistry.

The Arrangement of the Table The Table has vertical columns called “groups” or “families.” Alkali metals form ions with a single positive charge.

The Arrangement of the Table The Table has vertical columns called “groups” or “families.” Each alkaline earth metal forms ions with two positive charges.

The Arrangement of the Table The Table has vertical columns called “groups” or “families.” Each halogen forms ions with a single negative charge.

The Arrangement of the Table The Table has vertical columns called “groups” or “families.” Each noble gas is unreactive.

The Arrangement of the Table

The Arrangement of the Table The Table has horizontal rows called “periods.”

The Arrangement of the Table The Table has horizontal rows called “periods.” First period

The Arrangement of the Table The Table has horizontal rows called “periods.” Second period

The Arrangement of the Table The Table has horizontal rows called “periods.” Third period

The Arrangement of the Table The Table has horizontal rows called “periods.” Fourth period

The Arrangement of the Table The Table has horizontal rows called “periods.” Fifth period

The Arrangement of the Table The Table has horizontal rows called “periods.” Sixth period

The Arrangement of the Table The Table has horizontal rows called “periods.” Seventh period

The Arrangement of the Table The Table has horizontal rows called “periods.”

The Arrangement of the Table The Table has horizontal rows called “periods.” We see a gradual change in the properties and reactivities as we move across a period. We will explore this more in Unit 1b.

The Arrangement of the Table

The Arrangement of the Table The table is also divided by the type of element.

The Arrangement of the Table The table is also divided by the type of element. There are metals.

The Arrangement of the Table The table is also divided by the type of element. There are metals. There are non- metals.

The Arrangement of the Table The table is also divided by the type of element. There are metals. There are non- metals. There are metalloids.

The Arrangement of the Table The table is also divided by the type of element.

The Arrangement of the Table

Each space in the table represents an element. Which looks like this:

Each space in the table represents an element. Which looks like this: C 6 Carbon 12.011 [He] 2s22p2

Each space in the table represents an element. Which looks like this: Each symbol in the space gives information about the element. 6 C Carbon 12.011 [He] 2s22p2

Each space in the table represents an element. Which looks like this: Atomic number is the number of protons in the nucleus of the atom. 6 C Carbon 12.011 [He] 2s22p2

Each space in the table represents an element. Which looks like this: The symbol is an abbreviation of the name of the element 6 C Carbon 12.011 [He] 2s22p2

Each space in the table represents an element. Which looks like this: The name of the element 6 C Carbon 12.011 [He] 2s22p2

Each space in the table represents an element. Which looks like this: The average atomic mass of the element in nature 6 C Carbon 12.011 [He] 2s22p2

Each space in the table represents an element. Which looks like this: The electron configuration of the element in a neutral state 6 C Carbon 12.011 [He] 2s22p2

Each space in the table represents an element. However, elements with no stable state will have spaces that look like this. Which looks like this:

Each space in the table represents an element. However, elements with no stable state will have spaces that look like this. Which looks like this: Tc 43 Technitium (97.9072) [Kr] 4d65s1

Each space in the table represents an element. Which looks like this: The atomic mass of the most stable or most common isotope of the element in nature 43 Tc Technitium (97.9072) [Kr] 4d65s1

Each space in the table represents an element. Which looks like this: 43 Tc Technitium (97.9072) [Kr] 4d65s1

Summary Organized by columns (groups) Organized by rows (periods) Organized by type of element (metal, nonmetal, or metalloid) Each space gives information about each element (atomic number, symbol, name, atomic mass, and electron configuration)