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Meson was discovered by:
A) Powell
B) Seaborg.
C) Anderson.
D) Yukawa.

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Answer
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Hint: We know that in molecule material science, mesons are hadronic subatomic particles made out of one quark and one antiquark, bound together by solid connections. Since mesons are made out of quark sub particles, they have a significant actual size, a width of around one femtometer.

Complete step by step answer:
We must remember that the hadrons are characterized as the subatomic molecule made of quarks, gluons and enemies of quarks. Hadrons are the heaviest particles. It is made out of at least two quarks that are held firmly by the electromagnetic power. Each individual quark has practical electric charges; these consolidate with the end goal that hadrons convey a net whole number electric charge. The basic two different ways are three quarks of various tones or a quark of one tone and an antiquark that has a related anti-colour. Hadrons under the main course of action are known as baryons and those under the subsequent game plan are called mesons.
We must remember that the mesons are particles present in the nucleus. The stability of the nucleus depends on the meson particles. It was discovered by Yukawa and he is a Japanese scientist.
All mesons are precarious, with the longest-lived going on for a couple of hundredths of a microsecond. Charged mesons rot (at times through intervening particles) to frame electrons and neutrinos. Uncharged mesons may rot to photons. Both of these rots suggest that tone is not, at this point a property of the result.

So, the correct answer is Option D.

Note: Now we discuss about the properties of Hadrons as,
We have to know that the properties of hadrons are controlled by their valence quarks. Following are the properties shown by the hadrons,
They convey no net shading charge despite the fact that the quarks convey a shading charge. Just an exceptionally little piece of the mass of a hadron is because of the quarks in it, which is the strange thing about hadrons.
Protons are steady, and neutrons bound inside the nuclear cores are steady of the hadrons, while different hadrons are insecure under customary conditions.
Hadrons material science is concentrated by impacting protons of substantial components like that of lead and distinguishing the trash in the delivered molecule.