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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
Why is the charge to mass ratio of proton not constant?
The charge and mass ratio of proton is constant, the positive particles found during discharge tube experiment are nuclei of atoms which have different charge and mass ratio.
What statement applies to the electron at state 2?
It possesses greater energy than the ground state.
Why pi electron pairs are not considered to be an active set of electrons?
because they do are not form hibridized overlapping of atomic orbitals,hence they do parallel overlapping in which electorn pair are shaired but they do not consider as active set in case of double and tripple covalent bond.
How many protons would fit in a milk carton?
Over a million trillion gazillion etc. protons will fit in a (1 L) milk carton.
What is the difference between subatomic particles and elementary particles?
Subatomic particles are proton, neutron, electron; these particle are some examples of the large group of elementary particles.
Most recent use of an Electron microscope?
The Most recent use of a electron microscope was too look at things that were really really small not like atoms but bigger stuff than that.
Positive charge particles are called Protons Negatively charged particles are called Electrons Neutrons have no charge Protons was discovered by Ruther Ford Electrons was discovered by JJ Thompson Neutons was discovered by James Chadwick
What element has 41 neutrons and 20 protons?
This isotope don't exist.
Added:
That's right, the element with atom number 41 has 41 protons and should be :
Naturally occurring niobium which is composed of one stable isotope, 41Nb(93)
This means that the mass number (= total of protons AND neutrons) is 93!, so this isotope of Nb has 93-41 = 52 neutrons!
As of 2003, at least 32 radioisotopes have also been synthesized, ranging in atomic mass from 81 to 113, so they have 40 to 82 neutrons. This makes the amount of 20 neutrons erronous.
However: if the question were 'inverted' to:
"What element has 21 (not 41) protons and 20 neutrons" instead, there is a possible more realistic question.
The answer to this is: scandium, 21Sc(41) This unstable isotope of Sc, with mass number 41, has 21 protons and 20 neutrons.
This all depends on the situation and context. In particle physics, proton decay is hypothetical. It is a type of radioactive decay where protons decay into lighter subatomic particles.
How many neutrons does an atom of U-251 have?
Number of neutrons = Mass number - Atomic number = 251 - 92 = 159
How many valance electron does krypton have?
Since krypton is a noble gas in the group number 18, it has 8 valence electrons. Eight is the maximum number of valence electrons.
How many neutrons are in fluorite?
Fluorite (also called fluorspar) is a halide mineral composed of calcium fluoride, CaF2.
The number of neutrons depends on how much mineral you have.
One molecule of CaF2 has one calcium atom with either 20, 22, 23, 24, 26 or 28 neutrons and two Fluorine atoms each of which has 10 neutrons.
So at least 30 neutrons in one molecule.
Each 30 grams of fluorite has an Avogadro number of molecules (6.02214 × 1023). so 100 grams of fluorite has about 6 * 1026 neutrons
What happens when a nonmetal atom gains an electron from another atom?
It becomes a negatively charged ion with a charge of 1-.
Which subatomic particle is farthest from the nucleus in the Bohr model?
the electrons or more specifically the valence electrons
Would an antimatter apple fall up?
No, and antimatter apple would not fall up. It still applies to the same laws of physics, but the only variation is is when it makes connection with it's opposite charge, then the antimatter annihilates both itself and the particles that I connected to.
How many neutrons in on atom of hydrogen?
Hydrogen has several isotopes, and the average atomic weight for a hydrogen atom is about 1.007 u. Here are the neutron counts for each isotope:
- Hydrogen-1 (Protium): no neutrons
- Hydrogen-2 (Deuterium: one neutron
- Hydrogen-3 (Tritium): two neutrons
- Hydrogen-4 (Quadrium): three neutrons
- Hydrogen-5: four neutrons
- Hydrogen-6: five neutrons
- Hydrogen-7: six neutrons
Well, at some point the universe was supposed to be smaller than what the Heisenberg Uncertainty Principle states we can measure, so one or the other of these concepts is wrong. I'm just a math guy so someone else will ahve to figure out where the mistake is.
What fills the space between Neutrons and electrons?
There is nothing that fills the space between neutrons and electrons. There may be a couple of other particles, but they do not come close to filling the space.
the smallest thing in the universe. also its a vibrating string that creates energy. every thing is related though string theory.
Do all the atoms have the same proton number?
In respect to different elements, no they don't, in respect to like atoms of one particular element, yes they do. The electrons are the particles that vary from like atoms of the same element. When the electrons and protons are uneven within an atom, you have a radioactive element.
