Oxidation numbers

How many valence electrons do elements in Group 15 have?

• 15

• 5

• 4

How many electrons are required to fill the outer shell for elements in Group 15

• 15

• 3

• 5

How many valence electrons do elements in Group 13 have?

• 13

• 5

• 3

How many valence electrons do elements in Group 1 have?

• 7

• 10

• 1

How many valence electrons are required to fill the outer shell for elements in Group 17?

• 17

• 1

• 7

How many valence electrons do most elements in Group 18 have?

• 18

• 8

• 2

What is the charge, or oxidation number, for elements in Group 17?

• + 1

• -7

• -1

What is the charge, or oxidation number, for elements in Group 2?

• -2

• +2

• -3

What is the charge, or oxidation number, for elements in Group 13?

• + 3

• -5

• +13

What is the charge, or oxidation number, for elements in Group 14?

• 14

• +4/-4

• -16