Quarks are entities that have___________

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Solution

Quarks:
These are the entitites which have the fractional electric charge.
They are fundamental matter elements which are constituents of neutrons and protons.
These are indivisible.
It is the smallest unit matter in the nucleus.
A diagram to represent quark:
Hence, Quarks are entities that have fractional electric charge

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Q. It is now believed that protons and neutrons (which constitute nuclei of ordinary matter) are themselves built out of more elementary units called quarks. A proton and a neutron consist of three quarks each. Two types of quarks, the so-called 'up' quark (denoted by u) of charge + (2/3) e, and the 'down' quark (denoted by d) of charge (-1/3) e, together with electrons build up ordinary matter. (Quarks of other types have also been found which give rise to different unusual varieties of matter.) Suggest a possible quark composition of a proton and neutron.

Quarks are entities that have

Q. It is now established that protons and neutrons (which constitute nuclei of ordinary matter) are themselves built out of more elementary units called quarks. A proton and a neutron consist of three quarks each. Two types of quarks, the so called ‘up’ quark (denoted by u) of charge

+ (\frac{2}{3}) e

, and the ‘down’ quark (denoted by d) of charge

1 (\frac{1}{3}) e

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It says that in beta decay a neutron splits up to form a proton,a nutrino and an electron/positron.

A Neuton is made of two down quarks and one up quark.
and my doubt is that

1) Are The most stable quarks such as Up and Down interconvertible?

2) As the current laws of physics do not admit Quark-Lepton Complementarity how could a particle made of quarks split to an electron which is a lepton?

Itis now believed that protons and neutrons (which constitute nuclei ofordinary matter) are themselves built out of more elementary unitscalled quarks. A proton and a neutron consist of three quarks each.Two types of quarks, the so called ‘up’ quark (denoted byu) of charge (+2/3) e,and the ‘down’ quark (denoted by d) of charge (−1/3)e,together with electrons build up ordinary matter. (Quarks of othertypes have also been found which give rise to different unusualvarieties of matter.) Suggest a possible quark composition of aproton and neutron.

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