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What element will result if two protons and two neutrons are ejected from a uranium nucleus?
If two protons and two neutrons are removed from a uranium nucleus, the new element is thorium. The isotope cannot be determined because the identity of the uranium isotope was not given.
When a parent radioactive nucleus splits by ejecting an alpha particle the remaining nucleus has what left?
two protons and two neutrons less than the original nucleus.* A lower atomic mass (-4)* A lower atomic number (-2)In alpha decay, an alpha particle (helium nucleus) is given off.An alpha particle consists of 2 protons and 2 neutrons. THus the atom loses 2 protons and 2 neutrons. Proton number endows the identity of the element. The daughter nucleus is thus of a different element to the parent nucleus. It also has 2 fewer protons. Radium can decay by alpha emission, losing 2 protons from the original 88, leaving a nucleus of Radon with 86 protons.Neutrons and protons summed give the mass number of the atom. SInce an alpha-decayed nucleus loses a sum of 4 particles (protons and neutrons) the mass number goes down by 4.NovaNET answer: 2 protons and 2 neutrons less
Why has the rule about atoms not ever being able to be created or destroyed been modified?
It was once said that matter can neither be created nor destroyed, just changed. But things have changed.Atoms of helium are created from protons (hydrogen nuclei) They get squashed together to form helium and give off a huge amount of energy that we call an H-bomb blast.Likewise nuclear processes can take atoms apart.Einstein showed that matter and energy are convertible with E=mc2 . First we need to clarify things.The rule that atoms can not be created or destroyed applies only to chemical reactions. This is because such reactions are very low energy reactions. Even the highest energy chemical reactions, high explosive detonations, only rearrange atoms by changing valence band electron bonds. This only involves a small number of electrons in the outer shell.There are much higher energy reactions that can actually strip all the electrons from an atom. These reactions destroy all chemical properties of the atoms, creating what is called a charged plasma. Man made plasmas are usually formed by running very high electrical currents through a gas. Lightning is a natural plasma created by electricity. Most of the sun, solar flares, and the solar wind are other examples of plasma.There are even higher energy reactions that destroy the atoms and create totally different atoms. These are nuclear reactions, and are called that because they modify the tiny nucleus at the center of the atom. There are several different kinds of nuclear reactions:decay alpha - ejection of a fully ionized helium nucleus, called an alpha particlebeta - ejection of an electron or positron, called a beta particle, and the conversion of a neutron to a proton or a proton to a neutron respectivelygamma - ejection of a very high energy photon, called a gamma raycapture beta - reverse of beta decayK - similar to beta capture of an electron, but the electron came from the atom's own innermost shell (the K shell) instead of from outside the atomneutron - a neutron is added to the nucleus. this usually triggers one or more decays, but in certain very heavy unstable isotopes triggers fissionfission spontaneous - this can be considered as similar to decay, but the nucleus happens to be so unstable that instead of ejecting small particles as in decay the nucleus splits into several parts (most commonly two parts)chain reaction - splitting of an atom triggered by neutron capture. it becomes a chain reaction because each fission (spontaneous or chain reaction) ejects several neutrons each of which can trigger more fissionsfusion stellar - this is a series of fusion reactions triggered by gravitational heating from the collapse of the gas making up the star. young stars burn H-H through several steps to make He, older stars burn He-He-He to make C, and so on until the star dies after burning all its fuel making Ni and FeD-D - a fusion reaction that directly produces He, used by some nuclear weapon designsD-T - a fusion reaction that directly produces He and a neutron, used by almost all fusion type nuclear weapon designs. dry lithium deuteride fueled designs convert the lithium to tritium by using fission neutrons. of the "hot fusion" reactions this is the easiest to ignite as it requires the lowest temperatureT-T- a fusion reaction that directly produces He and two neutrons, used by some nuclear weapon designsmuon catalyzed cold fusion - the only known fusion reaction that can actually occur and be sustained at room temperature. it operates by replacing the electrons in ordinary hydrogen atoms with muons. muons are particles identical to electrons except they weigh 200 times as much, which causes the orbitals to be 1/200th the size of normal electron orbitals. this allows hydrogen atoms to approach close enough at room temperature to fuse.etc.The old pre-relativity conservation rules:Matter can neither be created or destroyed.Energy can neither be created or destroyed.Are replaced with the new post-relativity conservation rule: Mass-Energy can neither be created or destroyed, just converted back and forth.
Where do electrons lost by metal atoms during the formation of ions come from?
When chemical bonds form, thermal energy supplies some of the energy needed to remove electrons from metal atoms. Also, energy is released as the electron associates with another atom. This energy contributes to the removal of electrons from metal atoms too; both processes happen simultaneously (as the electron moves away from the metal, it moves closer to the other atom. Because of this, there is a lower activation for the process than there otherwise would be). In some cases, the electron is not passed to another atom. This can occur when a high energy photon is absorbed, which ejects the electron from the metal.
What two experiments involving light and matter could not be explained by the wave theory of light?
In the days before quantum mechanics there was discussion whether light was a particle or wave. The problem was that neither one could explain all phenomena completely. For example, the particle theory couldn't not account for interference patterns that can be made with light, but the wave theory could not account for the photo-electric effect. In this effect a photon (a light particle) deposits energy into a metal causing the metal to eject an electron. The puzzling thing was that increasing the intensity of the light did not increase the kinetic energy of the ejected electrons, only the amount of such ejected electrons. The photo-electric effect was finally tackled by Albert Einstein (for which he won the Nobel Prize in 1921), and light is now regarded as consisting of 'wave-packets' with photons have a unintuitive wave-particle duality.
If a neutron ejects an electron is it still neutral in charge?
Your question is a bit confusing but a neutron is ALWAYS neutral. If a molecule loses an electron it moves toward the "positive charge" catagory, but it depends on the molecule.
When an element decays what does it lose?
in alpha decay it loses a helium nucleus (2 protons, 2 neutrons)in beta decay a neutron converts to a proton and it ejects an electron and a neutrinoin gamma decay an excited nuclear state relaxes and a gamma photon is emittedin "k-capture" an inner electron is eaten by the nucleus converting a proton to a neutron and it ejects a neutrinothere are also a few other mechanisms.
He decay of a neutron into a proton also ejects a small particle called a?
Beta Particle
The decay of a neutron into a proton also ejects a small particle called a?
the decay of neutron into proton givesz small praticle called negative beta particle
When uranium (92 proton) ejects an beta particle how many protons does the remaining nucleus have?
90 protons
What part of a firearm ejects shells or cartridges?
The ejector
When a material ejects particles or energy spontaneously it is?
radioactive :)
What is it called when a volcano ejects gas and liquid?
It is called Eruption.
Which chamber of the heart ejects blood to the pulmonary trunk?
Right ventricle
What happens when gas ejects from solution gas drive mechanism?
bubbles
What is the oxytocin target?
Oxytocin ejects milk from mamary glads.Muscles of uterus are contracted.
What part of the firearm loads fires and ejects the shells and cartridges?
Action or reciever
