Valence Electrons and Dot Diagrams

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in forming bonds with other atoms.

Front

How many protons does an atom of carbon have?

Back

An atom of carbon has 6 protons.

Front

What is the significance of the number of valence electrons in an element?

Back

The number of valence electrons determines how an element will react chemically and how it will bond with other elements.

Front

Which group of the periodic table contains elements with 5 valence electrons?

Back

Group 15 (or Group 5A) contains elements with 5 valence electrons.

Front

What is the electron dot structure for oxygen?

Back

The electron dot structure for oxygen has 6 dots representing its 6 valence electrons.

Front

How do you determine the number of valence electrons in an element?

Back

The number of valence electrons can be determined by the group number of the element in the periodic table.

Front

What is the electron dot structure for phosphorus?

Back

The electron dot structure for phosphorus has 5 dots representing its 5 valence electrons.

Front

Which element has the electron dot structure that looks like this: ••P••?

Back

The element is phosphorus.

Front

What does the dot diagram for aluminum look like?

Back

The dot diagram for aluminum has 3 dots representing its 3 valence electrons.

Front

What is the electron dot structure for silicon?

Back

The electron dot structure for silicon has 4 dots representing its 4 valence electrons.