Question

What are nucleons? Where are the protons and neutrons present in a mucleas? How many neutrons are present in 1 atom of C₁₂?

Answer 1

Nucleus of an atom is made up of protons and neutrons. So, proton and neutrons together are known as nucleons. The specific pattern of arranging nucleons in nucleus is not known.
The atomic number of C is 6 and mass number is 12.
Atomic number = number of protons = 6
Mass number = number of proton + number of neutron
12 = 6 + number of neutron
number of neutron = 12-6 = 6