How many protons, electrons, and neutrons make of carbon-13?

Answer: 6 protons

Explanation: C, 13C, and 14C are isotopes of carbon (Z = 6) and therefore contain six protons. If the atoms are neutral, they also must contain six electrons. The only difference between these isotopes is the number of neutrons in the nucleus.

It contains 6 protons, 6 electrons and 7 neutrons

Explanation:

it contains 6 protons and 6 electrons because the isotope C-13 is a stable isotope. Number of neutrons can be calculated like this:

13 (mass number=nucleus) - 6 (nr. protons) = 7 (nr. neutrons)