Of the following metals,________ exhibits multiple oxidation states.
A)Ni
B)K
C)Ca
D)Al
E)Sr

Question

Quizplus · Accepted Answer

Nickel (Ni) exhibits multiple oxidation states, ranging from -2 to +4. This is because nickel has a relatively large number of valence electrons (10) and can lose or gain electrons to form various ions with different charges. In contrast, potassium (K), calcium (Ca), aluminum (Al), and strontium (Sr) typically exhibit only one oxidation state in most common chemical reactions.

Of the Following Metals,________ Exhibits Multiple Oxidation States