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
39) The ground state energy of hydrogen atom is ?13.6 eV. What are the kinetic and potential energies of the electron in this state?
Answer is:
13.6 eV, ?27.2 eV
Explanation:
Related Atoms and Nuclei MCQ with Answers
Answer is:
Lyman series: 103 nm and 122 nm; Balmer series: 656 nm.
Explanation:
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
Answer is:
about the same as predicted by Rutherford's model
Answer is:
much less than predicted by Rutherford's model
Answer is:
scattering is predominantly due to a single collision
Explanation:
It is found experimentally that for small thickness t, the number of ?-particles scattered at moderate angles is proportional to t. scattering is predominantly due to a single collision does this linear dependence on t provide?