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Alpha particles contain two protons and two neutrons. As such, they have a charge of +2 (from the protons). The nucleus, containing varying numbers of protons and neutrons, also has a plus charge, so the electromagnetic force causes like charges to repel. This remains true until you apply sufficient force (pressure) to bring the protons close enough for the strong atomic force to take over and initiate fusion.
Wiki User
∙ 12y ago
Wiki User
∙ 6y agoAn alpha particle is a helium-4 nucleus, and it has a +2 charge. Atomic nuclei have a positive charge, and like charges repel. If alpha particles encounter gold nuclei in their travels, that atomic nucleus will deflect the alpha particle. And it can even cause some alpha particles to appear to bounce back towards the source.
Wiki User
∙ 12y agoAlpha particle is positively charged (Its like a Helium nucleus)
and positive and positive repels
Wiki User
∙ 10y agoAlpha particles are possitively charged.Nucleus also have a possitive charge.
Wiki User
∙ 7y agoThey're both positively charged.
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Alpha particles are repelled by atomic nuclei because?
Alpha particles are repelled by atomic nuclei because alpha particles have a positive charge, and so do atomic nuclei. The positive charge on the surface of a nucleus will repel another positive charge, like an alpha particle, because of the law of electrostatics. That's the simple answer. And it is correct. But know this: Alpha particles were used in the early investigations of atomic structure and atomic interactions. The alpha particles were used to bombard atomic nuclei, and there are times when an alpha particle will be absorbed by an atomic nucleus. Somehow the laws of electrostatics took the day off, and the fact that absorption took place opens the door to discovery and discussion of other atomic forces. Word up.
What is the explanation for the scattering experiment of Rutherford?
Rutherford conducted an experiment in which Alpha particles were fired at a gold nucleus. Most of the particles passed through unaffected. However, some were deflected by a small amount whilst an even smaller number of the particles were deflected completely. This led to the conclusion that the atom has an extremely small, central, positively charged nucleus. As both the positive alpha particle and the positive nucleus repel each other by electrostatic forces. The fact that only a small amount of particles are deflected shows that the nucleus is only a tiny central part of the atom.
Alpha particles ejected from the nucleus travel at the speed of light?
No. Alpha particles are helium nuclei; such nuclei have a mass, and can therefore NOT travel at the speed of light.
Which Form of radiation that is a particle consisting of two neutrons and two protons?
Alpha radiation (alpha particles, helium nucleus)
In Rutherfords gold foil experiment shown in Figure 4-1 alpha particles that bounce straight back from the foil have struck in the gold atoms?
No, they struck the nucleus of the atom. Since the alpha particles are positively charged and nucleus is positively charged as well, they repelled each other and alpha particles are repelled back
What happens to a positively-charged alpha particles that comes the positively-charged nucleus?
It will repel
Why did the path of only some alpha particles deviate?
nucleus of the atom has positive charge.alpha particles are also positively charged.like charges repel each other.so alpha particles passing near the nucleus are repelled and deviated from the normal path
Why did Rutherford conclude that an atoms nucleus has a posotive charge instead of a negative charge?
when carrying out the alpha scattering experiment, he observed that some alpha particles got deflected from their course. as alpha particles are helium nuclei, they are positively charged. the fact that they deviate made him think that there might be some repulsion between the particles and the nucleus. as positive charges repel each other, he determined the nucleus to be positively charged.
Which particles is similar to a He nucleus?
The so-called alpha particles ARE helium nuclei.
Type of nuclear decay consisting of a helium nucleus?
Alpha decay. Alpha particles are the same as a helium-4 nucleus.
What do you think are the chances of alpha particle directly hitting the nucleus?
What do you think are the change of the alpha particles directly hitting the nucleus
Alpha particles are repelled by atomic nuclei because?
Alpha particles are repelled by atomic nuclei because alpha particles have a positive charge, and so do atomic nuclei. The positive charge on the surface of a nucleus will repel another positive charge, like an alpha particle, because of the law of electrostatics. That's the simple answer. And it is correct. But know this: Alpha particles were used in the early investigations of atomic structure and atomic interactions. The alpha particles were used to bombard atomic nuclei, and there are times when an alpha particle will be absorbed by an atomic nucleus. Somehow the laws of electrostatics took the day off, and the fact that absorption took place opens the door to discovery and discussion of other atomic forces. Word up.
What did Rutherford call the region that deflected the alpha particles?
Nucleus.
What happens to the positively charged alpha particle that comes near the positively charged nucleus?
It will repel
What happen to a positively-charged alpha particle that comes near the positively-charged nucleus?
It will repel
What happens to a positively charged alpha particle that comes near the positively-charged nucleus?
It will repel
What is the explanation for the scattering experiment of Rutherford?
Rutherford conducted an experiment in which Alpha particles were fired at a gold nucleus. Most of the particles passed through unaffected. However, some were deflected by a small amount whilst an even smaller number of the particles were deflected completely. This led to the conclusion that the atom has an extremely small, central, positively charged nucleus. As both the positive alpha particle and the positive nucleus repel each other by electrostatic forces. The fact that only a small amount of particles are deflected shows that the nucleus is only a tiny central part of the atom.
