What is the charge of an alpha particle?

Answer 1

+2 (2 x the absolute value of the charge of an electron). An alpha particle is a helium atom stripped of its neutrons.

Answer 2

Alpha Particle Charge

Answer 3

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235U92 (Uranium 235) has a nucleus containing 92 protons and, therefore, it has a positive charge of 92 x e+. An alpha particle ( 4 He2 ++), or an ionised helium nucleus, has a charge of 2 x e+ and so even though it approaches the uranium nuclei with a high velocity - it is repelled by very strong coulomb repulsion (or electrostatic repulsion). Hence, an alpha particle cannot come close enough to a uranium nuclei to affect it and, thus, fission it. However, a neutron has no charge and, therefore, it may penetrate the coulomb barrier presented by the uranium nuclei. When the neutron is close enough to the uranium it is snapped into the nucleus by the strong nuclear force. The extra neutron, that has been absorbed into the nuclei, sets up an energetic instability, which causes the nucleus to distort and then fission into fragments of lower atomic mass plus a least two extra neutrons, which may be prompt or delayed, and the release of around 200 Mev of energy. Radioactive decay, to release the energy excess, of the U235 nucleus is inhibited by what is referred to a the 'double humped fission barrier' in the potential well of the deformed nucleus and so fission becomes the energetically favourable route for the energy release. However, not all neutrons can achieve easy fission of U235 - the fission cross-section or area probability, for U235, depends upon the neutron energy as does the spread of fission fragment(s) atomic masses ( 75

Answer 4

Same as on electron but positive. How do we know? By thinking what is alpha particle. It's hydrogen atom wich used to be neutral but its electron was taken away.