Conversation so far:
why is the atomic number of carbon the number of protons
The number of protons determines an element’s atomic number (Z) and distinguishes one element from another.
what is the atomic number for carbon?
The atomic number of Carbon is 6.
what is the atomic weight for carbon?
12.01 is the atomic weight for Carbon.

Question: what is the atomic symbol?
Self-contained rewrite: what is the symbol for carbon?