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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

If an astronaut landed on a planet made of antimatter there would be an explosion and what?

If an astronaut landed on a planet made of antimatter, upon contact with regular matter an annihilation reaction would occur, leading to a release of energy and resulting in a large explosion of gamma rays and other particles. This would be extremely destructive and dangerous for the astronaut.

Do atoms lose protons but seldom lose or gain electrons?

Atoms typically do not lose protons because that would change the identity of the element. Instead, atoms can lose or gain electrons to form ions with a different charge. Protons are not generally lost by atoms in chemical reactions.

Subatomic particle 8 letters e t?

The particle you are referring to is an "electron." It is a negatively charged subatomic particle found in atoms.

How many neutrons are in europium?

europium's atomic number is 63, it's mass (in amu's [atomic mass units]) is 152, rounded. the atomic number = the number of protons, so europium has 63 protons.

the number of protons = the number of electrons, so there are 63 electrons in a europium atom.

the mass= protons + neutrons, therefore neutrons = mass - protons.

this would be 152 - 63 = 89

there are 89 neutrons in a europium atom.

p+: 63

n: 89

e-: 63

hope i helped! ^.^

What is a pi meson?

A pi meson, also known as a pion, is a type of subatomic particle called a meson. Pions are the lightest mesons and come in three forms: positive, negative, and neutral. They play a role in the strong nuclear force that binds protons and neutrons together in atomic nuclei.

How do you calculate the number of protons?

you look at either the atomic number or the number of electrons. That's the number of protons.

How high energy electrons are used in electron transport?

The energy molecule formed by the electron transport chain is called adenosine triphosphate, or ATP. Anywhere from 34 to 36 ATP can be produced during the electron transport chain.

Who invented the Electron Cloud Model?

The Electron Cloud Model was proposed by Erwin Schrödinger in 1926 as part of the development of quantum mechanics. It describes electrons not as discrete particles with defined orbits but rather as wave functions that exist in a three-dimensional cloud surrounding the nucleus of an atom.

What is the excitement of electrons?

We usually apply the term ionization to describe what happens to electrons that are excited and change Fermi energy levels. The term ion is applied to mean charged particles. As just one example, the gas atoms in a fluorescent tube are ionized by the applied voltage. The electrons are "excited" and "jump" to higher energy levels and then fall back and emit a photon of light as they do. When the tube is lit, countless numbers of electrons are shifting orbitals and shifting back with the emission of light to give us the illumination we desired when we turned it on.

Why are positrons produced from some nuclei but alpha or beta radiation come from other nuclei?

Positrons are a type of beta radiation (along with electons). Let's check things out to figure out why some nuclei are positron emitters. Positron emission (beta + decay) follows after the conversion of a neutron in an atomic nucleus into a proton. In atomic nuclei that have an excess number of neutrons to be stable, this is a common form of decay. It directly assists an unstable nucleus in getting closer to the "line of stability" of the N-Z plot. As beta + decay has a higher probablity for nuclei with excessive numbers of neutrons, beta - decay has a higher probability for nuclei with shortages of neutrons. In general, alpha decay is reserved for the heaviest radionuclides. We see radium, uranium, plutonium and a number of other elements from the upper end of the periodic table as having alpha decay as a possibility among their methods of decay. Links can be found below.

What quarks are in protons?

There are no quarks in an electron. Electrons are leptons, which are not made of quarks. Further, the electron is a fundamental particle, just like the quark. That means that neither quarks or electrons are made up of other particles, per the Standard Model of particle physics.

Where should you find a quark?

Quarks, which are fundamental particles, make up a composite particles called a hadron. The hadrons come in two types, and they are the baryon and the meson. The two best known hadrons are protons and neutrons, which are made up of three quarks each. The fact that the proton and neutron are made up of three quarks makes them baryons. Mesons are made up of two quarks. Use the link below for more information on quarks.

What subatomic particle does not have a charge?

A neutron is a subatomic particle that does not have an electric charge. It is found in the nucleus of an atom along with protons, which have a positive charge, and electrons, which have a negative charge.

How can you create a electron cloud model?

There are things called group and period. the groups are basically used for the electron dot diagram. the period is used for the cloud model. there are 7 periods. for example, Sodium is in period 3, so sodium has 3 energy levels. draw a circle. the circle is your nucleus. then draw another circle around your nucleus. that is your first energy level. there are 2 electrons in the first level, 8 in the second and 18 in the third. for sodium the atomic number is 11. first draw your nucleus. then draw your first energy level. the first energy level has 2 electrons. then draw your second energy level. it had 8 electrons. so far your atomic number is 8. sodium has 3 energy levels because it's in period 3. draw your third energy level with 1 electron. For sodium you only draw 1 electron because you already have 2 electrons on the first level and 8 on the second. the atomic number for sodium is 11 so it has to equal 11. that is why you only draw one electron on the third energy level. 8+2+1=11. it is the same number as your atomic number. and there you have your electron cloud model.

If the nucleus is made up of positive and negative electrons why doesn't it fall apart?

the nucleusSimply: the nucleus is NOT made up of positive and negative electrons.

(thought you have to understand, if it were, the opposing charges of the particles would hold it together, NOT make it fall apart)

the nucleus is made up of positive particles (protons) and neutral particles (neutrons). electrons are always NEGATIVELY charged and are not in the nucleus.

while it is true that atoms are made of positive and negative charges wich attract, the protons in the nucleus should repel based on this theory. the reason why the nucleus stays together is because there is a nuclear force that supercedes the magnetic and gravitational forces. neutrons that have a neutral charge also help the nucleus stay together because they buffer between protons.

If an element has 3 electron energy levels rings and 3 valence electrons what element is it?

The element is likely lithium (Li). Lithium has 3 electron energy levels (shells) and 3 valence electrons in its outermost energy level.

Is antimatter real?

Yes it is.

This does not mean that it has the properties ascribed to it in any particular work of fiction (Star Trek's version is reasonably realistic, Green Lantern's version is hopelessly silly), but yes, something by that name does really exist.

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Antimatter is real. Some scientists believe that antimatter is a perfect symmetry to matter. Antimatter is very dangerous and powerful. When matter and antimatter collide, an annihilation happens. Things around it will disappear.

How many valence electron shells do titanium have?

Titanium has the valence electron configuration of [Ar] 3d2 4s2. This means that Ti has 2 valence electrons, lying in the 4th s orbital. Note the relationship between the d-orbital and valence electrons is more complicated, but they are not regularly considered valence electrons.

Which subatomic particle gives an element its identity?

The number of protons in the nucleus give the atom its CHEMICAL identity (whether it is lead or gold ect...)

However, the combination of protons and neutrons give the atom its ACTUAL identity-both chemical properties and nuclear properties (assuming the atom is neutral). Unarguably, carbon 12 and carbon 14 are different for example. Chemically they are chemically the same but carbon 14 is radioactive and doesn't exist for very long (it is unstable and will decay).

Number of protons in a hydrogen?

The "NUMBER" (#) of Protons in an Atom of Hydrogen is one (1). The number of protons is what makes a specific element that element. Hydrogen always has one proton no matter what. If someone says that a hydrogen atom has two protons(they are incorrect), it is no longer hydrogen; it is the element Helium.

What is CERN working on?

The most famous of CERN's projects is The Large Hadron Collider (LHC) - The world's most powerful atom smasher. CERN's main function is to provide the particle accelerators and other infrastructure needed for high-energy particle physics research. Also, It is also noted for being the birthplace of the World Wide Web.

Is ATP considered an electron carrier?

No, ATP is not considered an electron carrier. ATP is the primary energy-carrying molecule in cells, storing and transferring energy for cellular processes. Electron carriers like NADH and FADH2 are involved in the transport of electrons during cellular respiration.