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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

What is a good comparison of the charge of an electron and charge of a proton?

An electron has a negative charge, represented as -1.6 x 10^-19 coulombs, while a proton has a positive charge of +1.6 x 10^-19 coulombs. Despite having opposite charges, the magnitudes of their charges are equal. This characteristic is fundamental in the interactions between electrons and protons in atoms.

Do antimatter has the same electrical charge and magnetic characteristics?

Antimatter particles have the opposite electrical charge and magnetic characteristics compared to their matter counterparts. For example, the positron has a positive charge while the electron has a negative charge. Similarly, the magnetic properties of antimatter are opposite to those of matter.

What are protrons neutrons and electrons made of?

Protons and neutrons are hadrons; they are made of quarks. Protons are composed of two up quarks and a down quark, while neutrons are composed of one up quark and two down quarks. The quarks are held together by gluons. Electrons are not composed of more fundamental particles; they are categorized as leptons.
they are made up of quarks

What is the electron configuration of mendelevium?

Mendelevium is a block f, period 7 actinide element. Its electron configuration is 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 5s2 4d10 5p6 4f14 5d10 6s2 6p6 5f13 7s2. Another way to write this is [Rn] 5f13 7s2 since the beginning of its configuration is the same as radon's.

Does electron has up or down quarks?

Electrons do not contain quarks. Quarks are fundamental particles that make up protons and neutrons in the nucleus of an atom, while electrons are a different type of fundamental particle with no quark composition.

What is The ratio of the specific charge of an electron to that of a positron is?

The ratio of the specific charge of an electron to that of a positron is 1:1. Both the electron and positron have the same magnitude of charge but opposite in sign, with the electron being negative and the positron being positive.

Who see the electron with electroscope?

An electroscope is a device that can detect the presence of electric charge, including electrons. When a charged object is brought close to the electroscope, the electrons on the device are repelled or attracted, causing the leaves to diverge. This divergence indicates the presence of electrons on the object being tested.

How is that an element can have many forms if the protons never change?

Different number of neutrons result in different isotopes:

  1. Hydrogen - 1 proton, no neutrons
  2. Deuterium - 1 proton, 1 neutron
  3. Tritium - 1 proton, 2 neutrons (radioactive)

Different oxidation states by exchanging electrons between higher energy "hidden" orbitals and valence orbitals:

  1. Ferrous - Iron with 2 electrons in valence orbitals
  2. Ferric - Iron with 3 electrons in valence orbitals

What are the three types of subatomic particles and where are they located?

The proton and neutron are found in the nucleus, and the electron is found in the electron cloud surrounding the nucleus.

Further down, you have up and down quarks. Two up quarks and one down quark form a proton, and two down quarks and one up quark form a neutron.

What particles are located in the electron cloud?

The electron cloud contains electrons, which are negatively charged particles that orbit the atomic nucleus. The cloud also contains other subatomic particles such as protons and neutrons in the nucleus, which contribute to the overall structure of an atom.

Who named alpha beta gamma rays?

they are just a b c, its the begining of the Greek alphabet, so it was something to do with the Greeks.

Ernest Rutherford arbitrarily named them after the first 3 letters of the Greek alphabet (actually a b g, not a b c, the Greeks had no letter for c). This practice of using Greek letters in mathematics, science, and engineering to identify things is common and in no way indicates any association with Greeks either ancient or modern. Mathematicians also frequently like to use Hebrew letters too.

Are electrons seldom found at different energy levels?

Yes - they spend all of their time in motion and the exact ebergy they are at varies and is affected by incident radiation - any light or heat on the atim will cause small changes in the energy of the elctron in an energy level which may move it.

What is the relationship between the Krebs cycle and the electron transport chain?

Electron transport cannot proceed if protons cannot be pumped across the inner membrane. Protons cannot be pumped unless the available energy to move them out of the matrix exceeds the required amount plus what energy is lost to heat.

Why does carbon does not gain or loose 4 electron to complete its octet?

Carbon does not gain or lose 4 electrons to complete its octet because it only has 4 valence electrons to begin with. To complete its octet, carbon forms covalent bonds by sharing electrons with other atoms to achieve stability due to its electronic configuration.

Which is the electron configuration of a transition element for the Bohr orbits?

The electron configuration of a transition element in the Bohr model consists of electrons filling the principal energy levels (n = 1, 2, 3, etc.) and sublevels (s, p, d, f). Transition elements have partially filled d orbitals, so their electron configurations typically involve electrons filling the s and d orbitals. For example, the electron configuration of chromium (Cr) in the ground state is [Ar] 3d^5 4s^1.

What element has 46 protons and 55 neutrons?

The number of protons defines an element - the number of neutrons isn't needed to find the identity of the element. All ions and isotopes with 44 protons is ruthenium. However, with the information about the neutrons, we know the specific isotope: 101Ru.

How can there be 1 proton with a hydrogen atom with a mass?

Though a hydrogen atom typically has one proton, its mass is not solely determined by the proton. The mass of a hydrogen atom comes from the combination of the proton and an electron. The electron contributes a much smaller amount to the overall mass compared to the proton.

What is the difference between anti matter and dark matter?

Antimatter is actually matter that can be considered going back in time. Negative matter is matter that has negative gravity properties. In other words, Negative matter repels things. Negative matter is also theoretical, not proven. Antimatter has been (and is being) made.

When positively charged particles bounced back from the foil Rutherford called this?

Rutherford called this phenomenon the "scattering of alpha particles" which was a key observation that led to the development of the nuclear model of the atom.

What is the electron Configuration for lanthanide?

The general electron configuration for lanthanides is [Xe] 4f^n 5d^1 6s^2, where n ranges from 1 to 14 depending on the specific lanthanide element.

How many protons and electrons and nuetrons does scadium have?

Scandium's, or Sc's, atomic number is 21. Its most common isotope has an atomic mass of 45. Since an electrically neutral atom's atomic number is equal to its number of protons as well as its number of electrons; and since the number of neutrons in a particular isotope of an atom is equal to its atomic mass minus its atomic number, the number of neutrons of the most common isotope of neutral scandium is 45 - 21 = 24.