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Particle Physics
Relatively recent experimental results have confirmed what philosophers throughout history had theorized all along; that all matter is made up of elementary particles. Those curious about this cutting-edge field of physics known as particle physics should post their questions here, including those about fundamental particles, fundamental forces, Grand Unified Theories, and the extraordinary devices that have been or need to be engineered to research them.
3,842 Questions
The word subatomic refers to something that comprises an atom. Examples of these include protons, neutrons, and electrons. Ions are just charged atoms, so no, they are not subatomic, unless you are talking about Hydrogen, which generally has one electron and one proton.
What type of element atom has 80 protons?
An element atom with 80 protons is lead (Pb) on the periodic table.
Who of the four fundamental forces have a significant impact on the nucleus?
The strong nuclear force has a significant impact on the nucleus as it is responsible for binding protons and neutrons together. This force is responsible for holding the nucleus together despite the electromagnetic repulsion between protons.
Can exact path of a moving electron be predicted?
No, the exact path of a moving electron cannot be predicted due to the inherent probabilistic nature of quantum mechanics. Instead, predictions are made in terms of the probability distribution of where the electron is likely to be found.
What is the quark structure of a baryon?
A baryon is made up of three quarks. There are two types of baryons: protons, which consist of two up quarks and one down quark, and neutrons, which consist of one up quark and two down quarks. Quarks are elementary particles that are held together by the strong nuclear force to form protons and neutrons within the atomic nucleus.
Which is a correct description of the organization of subatomic particles in atoms?
Subatomic particles are organized within the atom in the nucleus, which contains protons and neutrons, and in electron shells surrounding the nucleus where electrons are found. Protons have a positive charge, neutrons have no charge, and electrons have a negative charge. The number of protons determines the element, while the number of electrons determines the atom's overall charge.
Where are the electrons with less energy most likely located?
Electrons with less energy are most likely located closer to the nucleus of an atom. This is because electrons with lower energy levels have lower energy levels and are more strongly attracted to the positively charged nucleus.
What is the charge of a neutron in helium?
Neutrons have no charge, so in a helium atom, the neutron would also have no charge. Helium typically has two protons (+1 charge each) and two neutrons (no charge), resulting in a neutral overall charge.
What is the electron configuration of K 19?
Potassium is the group 1, period 4 element on the periodic table. That means that its electron configuration is 1s2 2s2 2p6 3s2 3p6 4s1. This can be shortened to [Ar] 4s1 because argon's electron configuration is 1s2 2s2 2p6 3s2 3p6.
What is the strangeness of the strange quark?
The strangeness of the strange quark is a property that distinguishes it from other quarks. It is a quantum number that represents the amount of strangeness carried by a particle containing the strange quark. The strange quark's strangeness value is -1.
How many up and down quarks are in one proton?
There are two up quarks and one down quark in a proton.
What happens to an electron if it is given energy?
An electron emits energy in the form of an x-ray (a photon) when its energy level in the electron cloud decreases as a result of reduction in the excitation level of the cloud. This means that the position of the electron in the cloud changes to a lower level.
What is a current carrier Valence electron Proton Free electron or Ion?
A current carrier can be any of the following: valence electron in a conductor, free electron in a semiconductor or metal, ion in an electrolyte, or proton in a hydrogen ion conductor. Ultimately, it depends on the material and conditions under which the current is being carried.
Where does oxygen act as the final electron acceptor to make water?
In the process of cellular respiration, oxygen acts as the final electron acceptor in the electron transport chain located in the inner membrane of the mitochondria. After receiving electrons from the chain, oxygen combines with hydrogen ions to form water.
Who discovered the neutron and why was it so hard to find?
OK so, the neutron was found by Chadwick, and it has no charge and it was the hardest atom charge o find because of actually a women named Joliot-Curie found the first hint of the atom but she rarely gets credited for it because she was a woman and at the time they didn't believe that women could be scientists,philospheres, etc.
hope this was helpful to u (:
How many electrons surround the nucleus of an atom of aluminum?
14 neutrons because the average atomic mass is about 27 and there are 13 protons.
Why protons does not attract electrons?
Protons and electrons have opposite charges, so they do attract each other. However, the force of attraction is balanced by the electromagnetic force that keeps electrons in their orbit around the nucleus of the atom. This balanced force allows atoms to remain stable.
How does an electron behave in a magnetic field?
If you wrap a coil of wire around a bar of iron and pass a current, an electromagnet will result. This principle is used in generators where the casing is magnetised and the rotor rotates in the magnetic field inside the casing(the armature), inducing a current in the rotor winding.
What is a positron emission tomography test?
This isn't really a question, but here we go...
PET technology is used in PET scans in hospitals. It is the largest scale use of antimatter currently available, as the emitted positrons are in fact the anti-particles of electrons. Therefore used improperly it can be extremely dangerous as if a particle meets its antiparticle they will annihilate.
Neutrons exist because the quark combination that composes them doesn't violate any conservation laws or symmetry requirements and is energetically stable enough to exist. This may be an unsatisfying answer, but that's the way particle physics works.
How do baryons and mesons interact?
Baryons and mesons interact through the strong nuclear force, mediated by the exchange of gluons. Baryons are made of three quarks while mesons are made of a quark-antiquark pair. These particles exchange gluons to transmit the strong force between them, which governs their interactions within the nucleus.
How are subatomic particles arranged?
Subatomic particles are arranged in the following way.
1) Elementary particles: These particles are not composed of other particles. Fermions: These are particles with half-integer spins, meaning they follow the Pauli exclusion principle; i.e. they can't be in the same place at the same time. i) Quarks: These are the particles that are responsible for fermionic interactions with the strong nuclear force. Examples include up, down, strange, charm, top, and bottom.
ii) Leptons: These are fermions that aren't effected by the strong nuclear force. Examples include electrons and neutrinos.
Bosons: Particles with integer spins, meaning they don't follow the Pauli exclusion principle; i.e. they can be in the same place at the same time. Examples include photons, gluons, and the Higgs.
2) Composite Particles: These are particles comprised of elementary particles. a) Hadrons: These particles are composed of quarks and therefore interact with the strong nuclear force. i) Baryons: These particles contain three quarks and therefore have half-integer spins, meaning they are fermions. Examples include protons and neutrons.
ii) Mesons: These particles contain two quarks and therefore have integer spins, meaning they are bosons. The pion is the best-known example.
b) Nuclei: These particles are composed of protons and neutrons and are mediated by mesons. These, combined with electrons, form atoms, which is where any answer concerning subatomic particles must end.
How many electrons are in -1 coulomb?
One coulomb is equivalent to approximately 6.242 x 10^18 electrons.
