Periodic Table - Groups and Periods

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

How many valence electrons does an atom in Group 14 have?

Back

4

Front

In which direction do groups on the periodic table go?

Back

Groups go up and down.

Front

What is a group in the periodic table?

Back

A group is a vertical column in the periodic table that contains elements with similar chemical properties.

Front

What is a period in the periodic table?

Back

A period is a horizontal row in the periodic table that indicates the number of energy levels of the elements.

Front

Where are valence electrons located?

Back

Valence electrons are located in the outmost shell/level of an atom.

Front

What does the period number indicate about an element?

Back

The period number tells us how many energy levels an element has.

Front

What is the significance of the atomic number?

Back

The atomic number indicates the number of protons in an atom and determines the element's identity.

Front

What are the main categories of elements in the periodic table?

Back

The main categories are metals, nonmetals, and metalloids.

Front

What is the difference between a group and a period?

Back

A group is a vertical column with similar properties, while a period is a horizontal row indicating energy levels.