Valence Electrons, Ions and the Periodic Table

Front

What are valence electrons?

Back

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

Front

How many valence electrons does Sodium (Na) have?

Back

Sodium has 1 valence electron.

Front

What is the significance of valence electrons in chemical reactions?

Back

Valence electrons determine how an atom can bond with other atoms and participate in chemical reactions.

Front

What are the rows on the periodic table called?

Back

Rows on the periodic table are called periods.

Front

What are the columns on the periodic table called?

Back

Columns on the periodic table are called groups or families.

Front

What is the goal of the Lewis Dot Structure?

Back

The goal of the Lewis Dot Structure is to show the element's valence electrons and bonding capabilities.

Front

How many valence electrons does Chlorine (Cl) have?

Back

Chlorine has 7 valence electrons.

Front

What is an ion?

Back

An ion is an atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.

Front

What is the difference between cations and anions?

Back

Cations are positively charged ions (lost electrons), while anions are negatively charged ions (gained electrons).

Front

What is the periodic trend for electronegativity?

Back

Electronegativity increases across a period and decreases down a group in the periodic table.