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What happen to atomic number and mass number of nucleus when it emits alpha particle electron and proton?
It's been awhile for me, but this is how I remember it. It is not convenient for me to look it up right at the moment, so you may want to verify this. Emitting an alpha particle (2 proton 2 neutron), atomic number would decrease by 2 and Atomic Mass decreases by 4.
Electron emission means a neutron turns into a proton and electron, but the electron shoots out. The atomic number increases by 1 and atomic mass stays the same. Proton emission, well it loses a proton. So the atomic number decreases and mass decreases.
What else can I help you with?
What happen to atomic number and mass number of nucleus when it emits electron?
When a nucleus emits an electron, the atomic number increases by 1 since the nucleus gains a proton. However, the mass number remains the same because an electron is much lighter than a proton or neutron.
The process by which high-energy particles and rays aare released?
This process is called particle radiation or particle emission, and it occurs when high-energy particles such as alpha particles, beta particles, or gamma rays are released from the nucleus of an atom. This emission can happen during radioactive decay or in nuclear reactions.
Problems with Rutherford model?
In Rutherford's model of the atom the electrons had a circular motion around the nucleus. By the laws of physics, if something is going in a circular motion then it must be accelerating and a particle that accelerates is losing energy. This means that the electrons that are revolving around the nucleus would eventually fall into the nucleus. Nucleus would eventually collapse. This does not happen therefore the Rutherford model was put aside.
How are photons made?
Photons are produced when electrons change energy levels within an atom or molecule. This can happen through processes such as atomic transitions, particle interactions, or even the acceleration of charged particles. Once the electrons transition to a lower energy state, they emit a photon as a way to release the excess energy.
What will happen to the wavelength associated with a moving particle if its velocity is reduced to half?
If the velocity of a moving particle is reduced to half, the wavelength associated with it will remain the same. The wavelength of a particle is determined by its momentum, not its velocity.
What happen to atomic number and mass number of nucleus when it emits electron?
When a nucleus emits an electron, the atomic number increases by 1 since the nucleus gains a proton. However, the mass number remains the same because an electron is much lighter than a proton or neutron.
What will happen to an atom is an beta particles emits or adds?
The beta particle will alter the electromagnetic field of the atom. An electron will add to the electromagnetic charge if emitted, and subtract from, if it is absorbed. A positron will do the opposite. The atomic nucleus will also change. an electron can convert a neutron to a proton if emitted, and a proton to a neutron if absorbed. The positron, again, will do the opposite.
What will happen inside the nucleus if there alpha particle radiation?
Two neutrons and two protons will split off from the main nucleus as the alpha particle, leaving a different element.
What happens to a radioactive nucleus when it emits gamma ray?
When a radioactive nucleus emits a gamma ray, it releases high-energy photons without changing its atomic number or mass. This emission helps the nucleus transition to a lower energy state, leading to greater stability.
What will happen if an electron is brought near an alpha particle?
The alpha particle will grab the electron, making it a part of its electron cloud.? As a result, the helium atom (which is what an alpha particle is) transitions from a +2 charge to a +1 charge.?A second electron will bring the helium atom to neutral, non-ionic, charge.
What happen to a positively-charged alpha particle that comes near the positively-charged nucleus?
It will repel
Why do trend happen in atomic radius?
Trends in atomic radius occur due to changes in the number of electron shells surrounding the nucleus as you move across a period or down a group in the periodic table. As you move across a period from left to right, the effective nuclear charge increases, pulling the electrons closer to the nucleus, decreasing the atomic radius. When moving down a group, additional electron shells are added, increasing the atomic radius due to more electron shielding of the outer electrons.
A postitvely charged praticle in an atom is called a?
The answer is an ion. An ion is what is left when the process of ionization has occured. Ionization is when an atom either gains or loses an electron, depending on the amount in its outer shell. There are many ways for this to happen including reacting with other atoms or absorbing radiation. An electron has a charge of 1-, therefore gaining an electron gives the ion a charge of 1- and losing an electron gives the ion a charge of 1+
What happen to atomic number and mass number of nucleus when it emits proton?
Both get decreased as At. no = No. of Protons & At. mass = No. of protons + No. of neutrons in the nucleus.
What are the shortcomings of Rutherford's atomic theory?
Rutherford explained that all the positive charge was concentrated at the centre and the electrons revolved around it. But this theory was discarded as a charged particle undergoing circular motion would accelerate and an accelerating particle looses energy. Hence, the electron would fall into the nucleus and the atom will collapse. But this doesn't happen. So, Rutherford's model of atom was discarded.
What are drawbacks of Rutherford's atom model?
Rutherford explained that all the positive charge was concentrated at the centre and the electrons revolved around it. But this theory was discarded as a charged particle undergoing circular motion would accelerate and an accelerating particle looses energy. Hence, the electron would fall into the nucleus and the atom will collapse. But this doesn't happen. So, Rutherford's model of atom was discarded.
What has to happen in order for an atom to lose an electron?
For an atom to lose an electron, it must undergo the process of ionization where it gains enough energy to overcome the attraction of the nucleus and the electron is released. This can happen through various means such as exposure to high-energy radiation or collisions with other particles.
