Platinum

[Alexandria Ilagan 2A]

What is the importance of platinum?

[Lily Benitez 2G]

When there is no metal present to conduct the flow of electrons from anode to cathode that is when we use an inert electrode like platinum.

[Riley Dean 2D]

Platinum is used in a cell diagram as an electrode when no other solids are present, it is added to either end of a cell diagram depending on where its needed

[Kevin Tang 4L]

Platinum is an inert electrode. It is used when theres is no metal present.

Mercury(l) is one non-solid that is an electrode so when it is used in a re-dox reaction, you don't need to use Platinum. (Ignore this part if you don't understand).

[mbaker4E]

Since platinum is inert, it will not interfere with the overall redox reaction. Therefore it can be used in the place of a solid metal, transferring electrons from an aqueous solution to the cathode.

[Karan Thaker 2L]

Can add Pt (s), or C (graphite)... Can also use Hg (l) if your ions / solids involve mercury.