JEE Main & Advanced JEE Main Paper (Held On 09-Jan-2019 Evening)

Which of the following combination of statements is true regarding the interpretation of the atomic orbitals?

[A] An electron in an orbital of high angular momentum stays away from the nucleus than an electron in the orbital of lower angular momentum.

[B] For a given value of the principal quantum number, the size of the orbit is inversely proportional to the azimuthal quantum number.

[C] According to wave mechanics, the ground state angular momentum is equal to\[\frac{h}{2\pi }\].

[D] The plot of \[\psi \,Vs\,\,r\]for various azimuthal quantum numbers, shows peak shifting towards higher r value.

[JEE Main Online Paper (Held On 09-Jan-2019 Evening]

A) [B], [C]

B)                           [A], [D]

C) [A], [B]

D)             [A], [C]

Correct Answer: B

Solution :

In ground state (Is orbital) \[\therefore \] Orbital angular momentum \[=\sqrt{\ell (\ell +1)}\frac{h}{2\pi }\]