Electron Configuration Quiz

What is the electron configuration of carbon?

• 2-6

• 2-4

• 2-8

• 2-8-4

How many valence electrons does an oxygen atom have?

• 2

• 6

• 8

• 4

What is the electron configuration of a sodium atom Na

• 2-9

• 2-8

• 2-8-1

• 2-8-2

How many valence electrons does a chlorine atom have?

• 6

• 8

• 10

• 7

What is the electron configuration of a calcium atom (Ca)?

• 2-8-8-2

• 2-8-2

• 18-2

• 2-16-2

How many valence electrons does a nitrogen atom have?

• 5

• 2

• 8

• 10

How many valence electrons does a potassium atom have?

• 4

• 2

• 3

• 1

Identify the element located in Period 3 and group 17/7.

This atoms has 7 valence electrons on the 3rd energy level.

• Flourine

• Chlorine

• Bromine

• Argon

How many valence electrons does a calcium atom have?

• 8

• 6

• 4

• 2

The diagram below is the bohr model of an atom. Which best describes this atom?

• it has a full outermost shell

• it has 6 valence electrons

• it has a positive charge

• it has 6 electrons