Oxidation number Quiz

Group 17 mostly likely has ions with a charge of

• +1

• +2

• -1

• -2

If an element forms a +3 charge it is likely in

• Group 1

• Group 2

• Group 13

• Group 15

Which is false about the Cl ion?

• It is in Group 7A.
• It is a cation.
• It has -1 charge.
• It has more electrons than protons.  

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

An atom becomes _________ when it gains electrons.

• Positive
• Negative
• Neutral
• Invinsible

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What charge does a sodium ion have?

• +2

• +1

• -1

• -2

Group 16 elements most likely have ions with a charge of

• +1

• +2

• -1

• -2

What charge will an sulfur ion have?

• +1

• -1

• +2

• -2

If an element has 3 valence electrons, what charge will likely form on its ion ?

• +3
• +5
• -3
• -5

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

most likely oxidation number of lithium

• -2

• -1

• +1

• +2