Orbital Diagrams

Q. explain principal azimuthal magnetic and spin quantum numbers

Q. The orbital having zero probability of finding electron on the surface of nucleus is and why 1. s 2. p_x 3. {d_{x^{2_{}}}}_{-y^2} 4. both 2 and 3

Q. Explain Hunds rule

Q. 26.Energy level falls from the 7th level to lower levels to give bands of Paschen series. Total number of bands are- A)4 B)3 C)2 D)1

Q. 20. Arrange the element of 3d series in decreasing order of their magnetic moment

Q. Why does the distance between principal quantum number decrease as we move to higher orbits?

Q. The number of occupied orbitals with magneticquantum number equal to zero in Ca and Nrespectively are(2) 3, 6(4) 10, 5(3) 8, 3

Q.

An element has the electronic configuration $1s^2,2s^{2}2p^6,3s^{2}3p^2$. Its valency electrons are

1. 6

2. 2

3. 3

4. 4

Q.

An element has the electronic configuration $1s^2,2s^{2}2p^6,3s^{2}3p^2$. Its valency electrons are[NCERT 1973]

1. 6

2. 2

3. 3

4. 4

Q. In presence of external magnetic field, f orbital is 7 fold degenerate or non degenerate??

Q. Why does having 8 electrons in the outermost shell of an atom provide most stability Or Is there any scientific basis or reason behind the octet rule?

Q. How many many more spectral lines can be there in transition from third energy levels which 1 is equal to to first energy level and second one

Q. 44.Why spin quantum no. cannot be same that is -1/2 and -1/2 or +1/2 and +1/2 for same orbital?

Q. For a 3s - orbital
$\Psi \left(3s\right)=\frac{1}{a\sqrt{3}}{\left(\frac{1}{a_0}\right)}^{\frac{3}{2}}(6-6\sigma +{\sigma }^2){ϵ}^{\frac{-\sigma }{2}},$
Where $\sigma =\frac{2rZ}{3a_0}$
What is the maximum radial distance of node from nucleus is

1. $\frac{(3+\sqrt{3})a_0}{Z}$
2. $\frac{a_0}{Z}$
3. $\frac{3}{2}\frac{(3+\sqrt{3})a_0}{Z}$
4. $\frac{2a_0}{Z}$

Q. there are no radial nodes in 2p orbital then why does the graph of sie square vs r passes through origin ?

Q. If $0.53\stackrel{\circ }{A}$ is the Bohr's radius for the $1^{st}$ orbit of hydrogen atom, the correct statement (s) among the following is/are :

1. The product of ${\Psi }^2$ and $4\pi r^2$ increases till it reaches at the distance of $0.53\stackrel{\circ }{A}$
2. ${\Psi }^2$ goes on increasing till it reaches at the distance of $0.53\stackrel{\circ }{A}$
3. $\Psi$ goes on increasing till it reaches at the distance of $0.53\stackrel{\circ }{A}$
4. The nodal point for the 1s orbital is at $0.53\stackrel{\circ }{A}$