Oxidation Numbers

What is the charge for an ion in group 1?

• +1
• -7
• -1
• +7

Tags

NGSS.HS-PS1-1

What is the charge of an ion in group 2?

• +2
• -6
• -2
• +6

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the charge of an ion in group 13?

• +3

• -3

• -5

• +5

Tags

NGSS.HS-PS1-1

What is the charge of the cobalt(IV) ion?

• +4
• -4
• +6
• +5

Tags

NGSS.HS-PS1-1

What is the charge of the iron(III) ion?

• +3
• -3
• +2
• +1

Tags

NGSS.HS-PS1-1

What element's don't have oxidation numbers?

• alkali metals
• noble gases
• halogens
• alkaline earth metals

Why are ions formed?

• To make our lives difficult

• Because atoms want 8 valence electrons

• Because atoms have the same number of protons and electrons

• Because atoms gained neutrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Cations are

• positive
• negative
• on the right side of the periodi table.
• nonmetals

Tags

NGSS.HS-PS1-1

Anions are _______ that form ____________ ions and __________ electrons.

• nonmetals, positive, lose
• nonmetals, negative, gain
• metals, positive, gain
• metals, positive, lose

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the charge of an ion in group 7?

• +7
• -7
• +1
• -1

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2