Alpha particles are positively charged....

Alpha particles are positively charged.

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The alpha particles are

Assertion : During alpha -particles scattering experiment, 99% of the alpha -particles get deflected through very large angles. Reason : The nuclei of atoms are positively charged and repel alpha -particles which are also positively charged.

A charged particle having a positive charge q approaches a grounded metallic spheres of raidus R with a constant small speed v as shown in figure. In this situation

The de-Broglie wavelength of an alpha- particles at a voltage V is (Given that alpha- particle has 2 units positive charge and 4 units mass )

A particle with positive charge Q is held fixed at the origen. A second particle with positive charge q is fired at the first paricle, which follows the trajectory as shown in fig. (a) Is the angular momentum of the second particular momentum of the second particle constant about some axis? Why or why not? Give reason to support your answer. (b) Does the Coulomb force that one charge exerts on other charges changes if the other charges are brought nearby?(yes/No)

The charge to mass ratio of alpha- particles is approximately to the charge to mass ratio of protons:

Which of the following path of alpha -particle is/are possible in the alpha -particle scattering experiment?

figure shows, in cross section, two Gaussian spheres and two Gaussian cubes that are centered on a positively charged particle on a positively charged partical . Rank greatest first, and indicate whether the manitudes are unifrom or variable along each surface.

alpha -particle consists of

Assertion : In Rutherford's alpha -particle scattering experiment, most of the alpha -particles were deflected by nearly 180^(@) . Reason : The positive charge of the atom is spread throughout the atom that repelled and deflected the positively charged alpha -particles.

CENGAGE CHEMISTRY ENGLISH-NUCLEAR CHEMISTRY-Exercise True/False

The alpha- rays have more penetrating power than gamma- rays.
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Radioisotopes of elements have same atomic number.
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Smaller the value of half- life period, greater is the number of atoms...
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Radon, actinon, and thoron are isobars.
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The last member of 4n+1 series is an isotope of …………………………………. .
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Gamma rays produce maximum ionization in gases.
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The radioactive decay follows zero- order kinetics.
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Pu^(239) is an artificial fissile material.
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The control rods used in a muclear reactor can be made up of
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I^(131) is unsed to study the activity of thyroid gland.
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Alpha particles are positively charged.
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Tritium is beta- radioactive in nature.
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The atomic reactor when used to generate electricity is termed breeder...
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The nuclear activity of a neutral atom and its ion is always the same.
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A positron is as heavy as a proton.
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The percentage efficiency of nuclear fissiion is higher than nuclear f...
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The ratio of C^(14)//C^(12) in dead tissue is less than that in fresh ...
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The SI unit of radioactivity is curie.
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All radioactive elements which emit beta- rays have the same half - l...
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The emission of an alpha- particle reduces the mass of nuclei by 4 uni...
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