Calculate the separation between particles, the binding energy and the wave-length of the first line of the Kyman series of a mesonic hydrogen (i.e an atom consisting of a proton +a revolving meson in place of an electron). Mass of a meson `=207` times mass of electron and charge of meson = charge of electron.

Calculate the separation between the particles of a systemin the ground state, the corresponding binding energy and wavelength of first line in Lyman series of such a system is positronium consisting of an electron and positron revolvin ground their common centre.

A mu-meson ("charge -e , mass = 207 m , where m is mass of electron") can be captured by a proton to form a hydrogen - like ''mesic'' atom. Calculate the radius of the first Bohr orbit , the binding energy and the wavelength of the line in the Lyman series for such an atom. The mass of the proton is 1836 times the mass of the electron. The radius of the first Bohr orbit and the binding energy of hydrogen are 0.529 Å and 13.6 e V , repectively. Take R = 1.67 xx 109678 cm^(-1)

The positronium consisting of an electron and a positron corresponding binding energy and wavelength of first line in Lyman series of such a system.

The radius of first Bohr orbit of hydrogen atom is 0.53Å . Then the radius of first Bohr-orbit of mesnoic atom (negative meson has mass 207 times that of electron but same charge) is: