Atoms and Nuclei Archives

In the spectrum of hydrogen, the ratio of the longest wavelength in the Lyman series to the longest wavelength in…

7 years ago

A nucleus of uranium decays at rest into nuclei of thrrium and helium. Then Options (a) The helium nucleus has…

7 years ago

If radius of the ₁₃Al²⁷ nucleus is taken to be Rᴀı, then the radius of ₅₃Te¹²⁵ nucleus is nearly Options…

7 years ago

Consider 3rd orbit of He⁺(helium), using non-relativistic approach, the speed of electron in this orbit will be (given K=9×10⁹ constant,…

7 years ago

The binding energy per nucleon of ₃⁷Li and ₂⁴He nuclei are 5.60 MeV and 7.06MeV, respectively. In the nuclear reaction…

7 years ago

Hydrogen atom in ground state is excited by a monochrmatic radiation of λ=975 Å. Number of spectral lines in the…

7 years ago

A radio isotope X with a half life 1.4 x 10⁹ years decays to Y which is stable. A sample…

7 years ago

The nuclear radius of a certain nucleus is 7.2 fm and it has a charge of 1.28x10⁻¹⁷ C. The number…

7 years ago

The most stable particle in Baryon group is Options (a) Proton (b) Lamda-particle (c) Neutron (d) Omega-particle Correct Answer: Proton…

7 years ago

On bombarding U²³⁵ by slow neutron, 200 MeV energy is released. If the power output of atomic reactor is 1.6…

7 years ago