Advertisements
Advertisements
प्रश्न
Thorium 90Th232 is disintegrated into lead 82Pb200. Find the number of α and β particles emitted in disintegration.
Advertisements
उत्तर
When an α-particle is emitted by an atom, its atomic number decreases by 2 and mass number decreases by 4.
When 90Th232 disintegrates to 82Pb200, 8 α particles are emitted.
When a β-particle is radiated, the atomic number increases by 1 and mass number does not change.
When 90Th232 disintegrates to 82Pb200, 8 β particles are emitted.
APPEARS IN
संबंधित प्रश्न
Using Rutherford's model of the atom, derive the expression for the total energy of the electron in hydrogen atom. What is the significance of total negative energy possessed by the electron?
In the ground state of ______ electrons are in stable equilibrium, while in ______ electrons always experience a net force.
An atom has a nearly continuous mass distribution in a ______ but has a highly non-uniform mass distribution in ______.
The positively charged part of the atom possesses most of the mass in ______.
Answer the following question, which help you understand the difference between Thomson’s model and Rutherford’s model better.
Keeping other factors fixed, it is found experimentally that for small thickness t, the number of α-particles scattered at moderate angles is proportional to t. What clue does this linear dependence on t provide?
Define the distance of closest approach. An α-particle of kinetic energy 'K' is bombarded on a thin gold foil. The distance of the closest approach is 'r'. What will be the distance of closest approach for an α-particle of double the kinetic energy?
In a Geiger-Marsden experiment, calculate the distance of closest approach to the nucleus of Z = 75, when a α-particle of 5 MeV energy impinges on it before it comes momentarily to rest and reverses its direction.
How will the distance of closest approach be affected when the kinetic energy of the α-particle is doubles?
Answer the following question.
Explain briefly how Rutherford scattering of α-particle by a target nucleus can provide information on the size of the nucleus.
In Geiger-Marsden experiment prediction was that ______.
The basic force acting on the alpha particles using Coulomb's law is ______.
In Geiger-Marsden experiment, actual results were ______.
If the radius of second electron orbit in hydrogen atom be r then the radius of the third orbit will be ______.
As compared to 12C atom, 14C atom has ______.
Which one of the following statements does not hold good when two balls of masses m1 and m2 undergo elastic collision?
The equation of trajectory of a projectile is given by y = `"x"/sqrt3 - "gx"^2/20`, where x and y are in metres. The maximum range of the projectile is:
The ratio active Nude 7N13 decays 6C13 through the emission of
An alpha particle has
Draw a graph showing the variation of the number of particles scattered (N) with the scattering angle θ in the Geiger-Marsden experiment. Why only a small fraction of the particles are scattered at θ > 90°?
According to Bohr model, magnetic field at centre (at the nucleus) of a hydrogen atom due to motion of electron in the ninth orbit is proportional to:
The shortest wavelength of the Brackett series of a hydrogen like atom of atomic number Z is same as the shortest wavelength of the Balmer series of hydrogen atom, then the value of Z is ______.
In the Rutherford experiment, α-particles are scattered from a nucleus as shown. Out of the four paths, which path is not possible?
Determine the distance of the closest approach when an alpha particle of kinetic energy 3.95 MeV approaches a nucleus of Z = 79, stops and reverses its directions.
Radius of the 1st orbit of hydrogen atom is r0. What will be the radius of the 4th orbit?
During Rutherford’s gold foil experiment, it was observed that most of the α-particles did not deflect. However, some showed a deflection of 180°.
What hypothesis was made to justify the deflection of α-particle by 180°?
