**Related Questions:**

### (1) The ionization energy of He+ is 19.6 10^-18 J
atom^-1. The energy of the first stationary state of Li+2 will be :

### (2) Show that the wavelength of a 150 g rubber ball
moving with a velocity 50 m sec^-1 is short enough to be observed ..

### (3) If an electron is present in n = 6 level. How many
spectral lines would be observed in case of H atom ...

### (4) Speed of helium atom at 300K is 2.40 x10^2 meter per
sec. What is its wave length. (mass number of helium is 4)..

### (5) K.E. of the electron is 4.55 x 10^-25 J. Its de
Broglie wave length is ...

### (6) The wavelength associated with a golf ball weighing
200g and moving at a speed of 5m/h is of the order.

### (7) The ratio of wave length of photon corresponding to
the alpha-line of Lyman series in H-atom and Beta-line of Balmer series in He+
is

### (8) shortest wavelength of He+ ion in Balmer series
is x, then longest wavelength in the Paschene series of Li+2 is

### (9) The ratio of difference in wavelengths of 1st and 2nd
lines of Lyman series in H like atom to difference in wavelength for 2nd and
3rd lines of same series is:

### (10) If H+ (ion) is accelerated to a final velocity of
6.62×10+6 meter per second and error in velocity is 1% then find uncertainty in
position is?

### (11) What is the relation between Total energy (TE),
Kinetic energy (KE) and Potential energy (PE) of Bohr's orbits?

### (12) How to calculate energy of Bohr's orbits in term of
Rydberg's constant

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