Answer
Carbon-14 has 6 protons and 8 neutrons.
$$^{14}_6C$$
Work Step by Step
1. As its name says, Carbon-14 has a mass number of 14.
A = 14
2. Using a periodic table, we can see that for carbon: Z = 6 = number of protons
Number of neutrons = A - Z = 14 - 6 = 8
3. Knowing the value of A and Z (14 and 6):
$$^{14}_6C$$
