jnokuthula53

19. Which of the following is correct about effective nuclear charge experienced by the orbital?

[A] it increases with increase of azimuthal quantum number
[B] it increases with increase of magnetic quantum number
[C] it decreases with increase of azimuthal quantum number
[D] It is same everywhere

20. Which of the following was discovered in Milikan’s oil drop experiment?

[A] Charge on a proton
[B] Charge on an electron
[C] Charge to mass ratio of an electron
[D] Mass of a Hydrogen atom