Ions and oxidation states

How many valence electrons are there in this atom?

• -4

• 4

• 0

• 15

what OXIDATION STATE (charge) would this atom pictured have?

• -4 or +4

• 4

• -4

• 15

What is the difference between a cation and anion?

• Cations are the same as anions, there is no difference

• Cations are single element ions, anions are compound ions

• Cations are negative ions, anions are positive ions

• Cations are positive ions, anions are negative ions

select all of the following elements or ions that have an oxidation state of -2

• O^-2

• Chorine

• Sodium

• Beryllium

• Bromine

Which column of elements on the periodic table has 3 valence electrons and an oxidation state of +3?

• the third tall column from the right

• the third tall column from the left

• the third row down

• the third row up

select all that is true about the elements in column 4?

• they will lose or gain 4 more valence electrons

• they have 4 valence electrons

• they will always be anions

• they can be anions or cations

• they will always be cations

What is the oxidation state of Sulfur?

• 2

• 3

• -2

• 6

Based on this isotope notation, select all of the following that is true for the element

• it has a +1 charge

• It is an anion

• it has a +1 oxidation state

• It is a cation

• It has a -1 oxidation state