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Why was the neutron the last subatomic particle to be discovered?
no electric charge. the nuclear theory at the time explained the atomic masses by assuming the nucleus contained a number of protons equal to the atomic mass number and enough electrons to cancel the charge beyond that of the atomic number of the element.
What is an electron or particle similar to an electron emitted from the nucleus with negligible mass and a charge of -1?
In this context, we call an electron a beta particle.
When a nucleus undergoes radioactive decay its new mass number is?
It depends. If the decay contains a particle with mass, then the nucleus' mass number must decrease. If the decay involves the emission of a massless particle (like a gamma photon), then the mass number is unchanged. If the reaction (not technically a decay) involves the nucleus absorbing a particle with mass (like U-235 absorbing a neutron in a fission chain reaction) then it is a transmutation and not a natural decay. The mass number must increase.
What is smaller in terms of size than an atom?
Subatomic particles are smaller than atoms. Subatomic particles are found inside the nucleus of an atom and include protons, neutrons, quarks, and gluons. Protons carry a positive electrical charge while neutrons carry a neutral charge. Inside these protons and neutrons are quarks which are held together by gluons. (1 atom = 0.000000001 meters while 1 quark = 0.000000000000000001 meters) The smallest known particle, however, that has mass is the neutrino.
What is a particle with no electrical charge called?
The neutron(s) of an atom carries no electrical charge, i.e. it has a "neutral" charge.a nuetrona neutronNeutronsNeutronThe neutron, which is in the atom's nucleus.Neutrons.All atoms except hydrogen have one or more neutrons in the nucleus. You might think of a neutron as a proton which is combined with an electron.Neutrons are the subatomic particles without a charge.Neutron.Neutron.A neutron has no net electrical charge, but only temporary for the half-life of a neutron is short - minutes only.Neutrons. (Electrons are the negative charges, protons the positive.)The neutron carries no net electric charge. Its mass is slightly greater than a proton.
Which subatomic particle has a charge of 0 and a mass of 1 atomic mass unit?
A neutron is the subatomic particle with a charge of 0 and a mass of 1 atomic mass unit.
What subatomic particle has mass nearly equal to that of a proton but carries no electrical charge?
The neutron is a subatomic particle that has mass nearly equal to that of a proton but carries no electrical charge.
What subatomic particle is equal in mass to a proton but has no charge?
the neutron
Which subatomic particle has a charge of 1 and a mass of 1 AMU?
Both one proton and one neutron each has a relative mass of 1 a.m.u.
What is A subatomic particle that has no charge and very small mass is called?
Positron
What is subatomic particle with a negative charge and very little mass?
electron
How do you call a subatomic particle that has no mass and a negative charge?
No such particle exists. All particles with charge also have mass -- no exceptions. Every particle with zero mass also has zero charge -- no exceptions.
What subatomic particles has appreciable mass and lacks a charge?
The neutron is the subatomic particle that has appreciable mass and lacks a charge.
What is a positive charged subatomic particle?
The proton is the subatomic particle which carries the positive charge. It has a charge of +1 and a mass of 1,672 621 637(83).10-27 kg.
What is the tiny subatomic particles related to the electron that has no electric charge and little mass?
The tiny subatomic particle related to the electron that has no electric charge and little mass is the neutrino. Neutrinos are extremely difficult to detect due to their neutral charge and low interaction with matter.
Elementary particle that carries a negative charge and almost no mass?
A electron is a subatomic particle outside the nucleus carrying a negative charge and very little mass. Other mass is negligible mass or a negative charge.
Which of the subatomic particle is the lightest?
Electron, lightest stable subatomic particle known. It carries a negative charge, which is considered the basic unit of electric charge. The rest mass of the electron is 9.109 × 10−31 kg, which is only 1/1,840the mass of a proton. An electron is therefore considered nearly massless in comparison with a proton or a neutron, and the electron mass is not included in calculating the mass number of an atom.
