The orbital diagram in which both Pauli's exclusion principle and Hund's rule are violated is: 
 

1.
2.
3.
4.

The correct order of the total number of nodes of atomic orbitals is: 

1.  4f > 6s > 5d

2.  6s > 5d > 4f

3.  4f > 5d > 6s

4.  5d > 4f > 6s

Correct statement among the following is: 

1.  Number of angular nodes = n - l - 1

2.  Number of radial nodes = l

3.  Total number of nodes = n -1

4.  All of the above

Orbitals having two spherical nodes are: 

The development of the wave mechanical model of the atom is based on which of the following concepts?

1.  De-Broglie concept of the dual nature of the electron.

2.  Heisenberg uncertainty principle.

3.  Schrodinger's principle

4.  All of the above

The incorrect statement regarding the characteristics of X-rays is :

1. The radiation can ionize the gas

2. It causes a fluorescence effect on ZnS

3. It is deflected by electric and magnetic fields

4. Have a shorter wavelength than ultraviolet rays

For any H-like system, the ratio of velocities of I, II & III orbit i.e., ${\mathrm{V}}_1<mspace\; width="1em"></mspace>:<mspace\; width="1em"></mspace>{\mathrm{V}}_2<mspace\; width="1em"></mspace>:<mspace\; width="1em"></mspace>{\mathrm{V}}_3$ will be:

1.  1 : 2 : 3

2.  1 : 1/2 : 1/3

3.  3 : 2 : 1

4.  1 : 1 : 1

In photoelectric effect, the kinetic energy of photoelectrons increases linearly with the:

1. Wavelength of incident light
2. Frequency of incident light
3. Velocity of incident light
4. Atomic mass of an element

The photoelectric emission from a surface starts only when the light incident upon the surface has a certain minimum:

The ratio of slopes of \(K_{max}\ \text{vs}\ v\ \text{an}d\ V_{0}\ \text{vs} \ v\) curves in photoelectric effect gives:
(v=frequency, \(K_{max}\)=maximum kinetic energy, \(V_{0}\) stopping potential):
1.  Charge of electron
2.  Planck's constant
3.  Work function
4.  The ratio of Planck's constant of electronic charge