Thomson's model
In Thomson models An atom has a nearly continuous mass distribution
Rutherford's model
In Rutherford models An atom has a highly non-uniform mass distribution
Thomson's model and Rutherford's model
In Thomson's model and Rutherford's models, the positively charged part of the atom possesses most of the mass
13.6 eV, ?27.2 eV
kinetic energy is the negative of total energy. K.E. = -E also P.E. is equal to negative of two time of total energy. P.E.=-2E
Lyman series: 103 nm and 122 nm; Balmer series: 656 nm.
In ground state, energy of gaseous hydrogen at room tempertaure= - 13.6 eV. When bombarded with 12.5 eV electron beam, the energy becomes, -13.6 +12.5 = -1.1 eV i.e. electron would jump from n=1 to n=3 where E 3= -13.6/3*3 = -1.5 eV On de-excitation the electron may jump from either n=3 to n=2 givind rise to Balmer series It may also jump from n = 3 to n =1 , giving rise to Lyman series