Atoms and Nucle...

statement-I :- Large angle scattering of al-pha Particle led to discovery of atomic nucleus.
state ment-II :- Entire Positive charge of atom is concentrated in the central core.

Statement-I : 1 amu = 931.48 MeV
Statement-II : It follows form E = mc²

Statement -I :-half life time of tritium is 12.5 years
Statement-II :- The fraction of tritium that remains after 50 years is 6.25%

Statement-I :- Nuclei of different atoms have same size
Statement-II :- R=Ro(A)^1/3

Match column I and II and chose correct Answer form the given below.

A radioative sample has no active atom at t = o, at the rate of dissntegration at any time is R and the number of atom is N, then ratio. (R/N) varies with time (t) as.

The transition the state n = 4 to n = 1 in a hydrogen like atom results in ultraviolet radiation. Infrared radition will be obtained in the transition form

In Bohr model the hydogen atom, the lowest orbil corresponds to

Energy levels A , B , C of a certain atom corresponding values of energy i.e. E_A < E_B < E_C. If λ₁, λ₂, λ₃ are wave lengths of radition corresponding to the transition C → B, B → A and C → A. Which of the following is correct

According to Bohr\'s theory the radius of electron in an orbit described by Principal quantum number n and atomic number Z, is Proportional to.