Nuclear Physics

Atomic Nuclear And Isotopes!!

Q: Neutron was suggested to be in the nucleus by
Ans: Rutherford in 1920

Q: Neutron was discovered by:
Ans: Chadwick in 1932

Q: The ratio of the radii of an atom and its nucleus id roughly equal to:

_{Ans: 10}5

Q: Nucleons means 

Ans: Neutrons & Protons

Q: Charge and mass of a proton are respectively:

Ans: 1.6 × ₁₀-19 coulomb

Q: Mass of neutron is exactly:

Ans: 1.675 × ₁₀-27 Kg

Q: In the unit of unified mass scale, the mass of an electron is:

Ans: 0.00055u

Q:Unified mass scale means that atomic mass is expressed in:

Ans: Atomic mass unit & u

Q: The figure 1.007276u shows the mass of an:

Ans: Proton

Q: In a neutral atom, the number of protons are always:

Ans: Equal to number of  protons


Q: Nucleus of a hydrogen atom may contain:

Ans: One proton only

Q: The particle which is 7000 times more massive than the electron is called

Ans: Alpha particle