Exploring Valence Electrons and Lewis Dot Symbols

What is the primary tool you need to understand valence electrons?

• A calculator

• A periodic table

• A textbook

• A computer

Valence electrons are found in which orbitals?

• S and P orbitals

• D and F orbitals

• Only P orbitals

• Only S orbitals

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many valence electrons does fluorine have?

• 7

• 9

• 2

• 5

How many valence electrons does potassium have?

• 1

• 2

• 3

• 4

What is the first step to find valence electrons using the periodic table?

• Find the column the element is in

• Find the row the element is in

• Count the number of protons

• Look at the atomic number

How many valence electrons does nitrogen have?

• 3

• 6

• 4

• 5

What do Lewis dot symbols represent?

• Only the valence electrons

• Protons and neutrons

• All electrons in an atom

• The atomic mass

According to Hund's rule, which orbital is filled first when drawing Lewis dot symbols?

• F orbital

• S orbital

• P orbital

• D orbital

How many valence electrons does sodium have?

• 1

• 2

• 4

• 3

How many valence electrons does nitrogen have in its Lewis dot symbol?

• 3

• 4

• 5

• 6