Notation Confusion: What Does $$C^+,C^{++}$$ Mean?

[Taylor_1989]

Homework Statement

Hi guys, I am having a issue with the notation of this question. I can workout what to do, but I don’t understand what is $$C^+,C^{++}$$
Could someone please explain. My thought is maybe is 2 carbon atoms bonded together?

Homework Equations

The Attempt at a Solution

 

[Cutter Ketch]

Homework Statement

View attachment 112322
Hi guys, I am having a issue with the notation of this question. I can workout what to do, but I don’t understand what is $$C^+,C^{++}$$
Could someone please explain. My thought is maybe is 2 carbon atoms bonded together?

Homework Equations

The Attempt at a Solution

C++ is doubly ionized, a carbon atom which has lost two electrons, and so has net 2 positive charges. This notation continues with numbers like C³⁺.

 

[Taylor_1989]

Ah! Thank you very much.