Question

What is the nucleon number of an atom?
A) The number of neutrons.
B) The number of protons.
C) The total number of protons and neutrons.
D) The total number of protons and electrons.

Answer 1

We know that the total number of protons and neutrons in an atomic nucleus is called a nucleon. Nucleons were believed to be rudimentary particles, not composed of more modest parts. Presently they are known to be composite particles, made of three quarks bound together by the supposed solid connection. The association between at least two nucleons is called internuclear connection or atomic power, which is likewise eventually brought about by the solid communication.

Complete step by step answer:
We have to remember that the nucleon number is defined as the number of protons and neutrons (together known as nucleons) in a nuclear core.
The mass number is diverse for each unique isotope of a substance component. This isn't equivalent to the nuclear number (Z) which signifies the quantity of protons in a core, and accordingly particularly recognizes a component.
Consequently, the contrast between the mass number (A) and the nuclear number (Z) gives the quantity of neutrons (N) in a given core: N = A - Z

So, the correct answer is Option C.

Note: We have to know that the protons and neutrons are most popular in their function as nucleons, i.e., as the segments of nuclear cores, yet they additionally exist as free particles. Free neutrons are precarious, with a half-existence of around 13 minutes, yet they have significant applications (see neutron radiation and neutron dispersing). Protons not bound to different nucleons are the cores of hydrogen molecules when bound with an electron or — if not bound to anything — are particles or astronomical beams.
As we know that both the proton and the neutron are composite particles, which mean each is made out of more modest parts, to be specific three quarks each; albeit once thought to be in this way, nor is a rudimentary molecule. A proton is made out of two up quarks and one down quark, while the neutron has one up quark and two down quarks. Quarks are held together by the solid power, or proportionately, by gluons, which intervene the solid power at the quark level.