JG The Organic ChemistryTutorValence Electrons & Core Electrons

How many valence electrons does an atom of nitrogen have?

• 10

• 8

• 5

• 2

How many core electrons does an atom of nitrogen have?

• 10

• 7

• 5

• 2

What is the electron configuration of nitrogen?

• 1s2 2s2 2p3

• 1s2 2s2 2p6 3s2 3p5

• 1s2 2s2 2p6

• 1s2 2s2 2p6 3s2 3p2

How many valence electrons does an atom of aluminum have?

• 3

• 5

• 8

• 2

How many core electrons does an atom of aluminum have?

• 10

• 5

• 3

• 2

What is the electron configuration of aluminum?

• 1s2 2s2 2p6

• 1s2 2s2 2p6 3s2 3p2

• 1s2 2s2 2p6 3s2 3p5

• 1s2 2s2 2p6 3s2 3p6

How many valence electrons does an atom of chlorine have?

• 10

• 8

• 7

• 5

How many core electrons does an atom of chlorine have?

• 12

• 10

• 7

• 5

What is the electron configuration of chlorine?

• 1s2 2s2 2p6 3s2 3p5

• 1s2 2s2 2p6 3s2 3p6

• 1s2 2s2 2p6 3s2 3p7

• 1s2 2s2 2p6

How many core electrons does an atom of iodine have?

• 40

• 50

• 53

• 46