Calculate the value of A.
`A=(E_(1.2))/(2E_(2,1))` where `E_(nz)`= Emergy of electron in `n^(th)` orbit, `Z=` atomic number of hydrogen like species.

Calculate the value of A. A= (E_1,2)/(2E_(2,1)) Where E_(n,z) = Energy of electron in n^(th) orbit , Z = atomic number of hydrogen like specie.

In Bohr's model, r_(n,z)= radius of n^(th) orbit with atomic number Z u_(n,z) =P.E of electron in n^(th) orbit with atomic number Z K_(n,z) = K.E of electron in n^(th) orbit with atomic number Z V_(n,z) = velocity of electron in n^(th) orbit with atomic number Z T_(n,z)= time period of revolution in n^(th) orbit with atomic number Z {:(Column I,Column II),((A)U_(1.2),K_(1.1),(p)1:8),((B)r_(2.1),r_(1.2),(q)-8:1),((C)V_(1.3),V_(3.1),(r)9:1),((D)T_(1.2),T_(2.2),(s)8:1):}

Calculate K.E., P.E total energy of the electron in Bohr's first orbit of an hydrogen atom.

In hydrogen atom, if the difference in the energy of the electron in n = 2 and n = 3 orbits is E , the ionization energy of hydrogen atom is

In hydrogen atom, if the difference in the energy of the electron in n = 2 and n = 3 orbits is E , the ionization energy of hydrogen atom is

In hydrogen atom, if the difference in the energy of the electron in n =2 and n=3 orbits is E, the ionization energy of hydrogen atom is