Answer:
Carbon
Step-by-step explanation:
This elelemnt is carbon because it has 6 protons. The number of electrons determines the type of element. Only carbon can have 6 protons. The mass number is 13. 6 protons + 7 neutrons = mass of 13. This is an isotope of carbon. This isotope is called carbon-13.
protons = positive charge (in the nucleus) tells what the element is
neutrons = neutral charge (in the nucleus)
electrons = negative charge (orbits the nucleus)