Question

Can someone help me ????

Answer 1

Answer:

$\boxed {\boxed {\sf Cobalt, Iron, and \ Copper}}$

Explanation:

The Stock System states that In a chemical formula or equation, some metals need a roman numeral after their symbol. If a metal has multiple oxidation states, it needs a roman numeral.

Use the Periodic Table to see the oxidation states for each metal.

• Cobalt (Co): +3, +2
• Lithium (Li): +1
• Barium (Ba): +2
• Iron (Fe): +3, +2
• Copper (Cu): +2, +1
• Potassium (K): +1

We can see that cobalt, iron, and copper have more than one oxidation state, so they would require a roman numeral.

Answer 2

Answer:

B) Lithium

C) Barium

F) Potassium

Explanation:

All of the above are Inorganic Compounds.