Periodic Table & Trends

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 Argon (Ar) have?

Back

Argon has 8 valence electrons.

Front

What is a group in the periodic table?

Back

A group is a vertical column in the periodic table where elements have similar chemical properties.

Front

Which group of the periodic table contains noble gases?

Back

The noble gases are found in Group 18 of the periodic table.

Front

What is the Modern Periodic Table arranged by?

Back

The Modern Periodic Table is arranged by atomic number.

Front

What are periods in the periodic table?

Back

Periods are the horizontal rows in the periodic table that indicate the number of electron shells in the elements.

Front

What are alkali metals?

Back

Alkali metals are the elements found in Group 1 of the periodic table, known for being highly reactive.

Front

What are alkaline earth metals?

Back

Alkaline earth metals are the elements in Group 2 of the periodic table, characterized by having two valence electrons.

Front

What are halogens?

Back

Halogens are the elements in Group 17 of the periodic table, known for being very reactive nonmetals.

Front

What is the significance of atomic number?

Back

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