Question Text
Question 1 :
How many {tex} 3 \mathrm { d } {/tex} electrons can have spin quantum number {tex} - \frac { 1 } { 2 } ? {/tex}
Question 2 :
If the value of En = - 78.4 kcal/mole, the order of the orbit in hydrogen atom is :
Question 3 :
The mass of a neutron is of the order of -
Question 4 :
Which of the following represent(s) the correct set of four quantum numbers of a {tex} 4 \mathrm { d } {/tex} electron?
Question 5 :
If 10<sup>-17</sup> J of light energy is needed by the interior of human eye to see an object. The photons of green light (λ = 550nm) needed to see the object are.
Question 6 :
With increasing principal quantum number, the energy difference between adjacent energy levels in atoms
Question 7 :
The wavelength of the radiation emitted, when in a hydrogen atom electron falls from infinity to stationary state {tex} 1 , {/tex} would<br>{tex} \left.\text { be (Rydberg constant } = 1.097 \times 10 ^ { 7 } \mathrm { m } ^ { - 1 } \right) {/tex}<br>
Question 8 :
The particle used by Rutherford in $\alpha$-ray scattering experiment was :
Question 9 :
The fourth line of the Balmer series corresponds to electron transition between which energy levels
Question 10 :
Which of the following properties of atom could be explained correctly by Thomson model of atom?
