1.
The first line of Lyman series corresponds to transition
2.
The orbital degeneracy of f-subshell =
3.
The orbital with highest penetration
4.
Ionisation energy is lowest for
5.
Which has maximum effective nuclear charge?
6.
The ratio of de Broglie wavelengths of electrons in n=1 and n=3 orbits of H-atom is:
7.
Which subshell has highest energy?
9.
The nodal plane concept is applicable to
10.
The number of allowed m values for d-orbital is
11.
Principal quantum number determines
12.
Rutherford model fails because it cannot explain ___
13.
Which emits IR radiation?
14.
In hydrogen, the wavelength of H-α is
15.
If n=4, the number of possible electrons =
16.
The number of radial nodes in 4p orbital is ___
17.
The energy of a photon is proportional to
18.
Electron affinity increases ___
19.
Which has the smallest wavelength?
20.
Hund’s rule deals with
21.
The number of radial nodes in 3s =
22.
The radius of second Bohr orbit of hydrogen (r₂) is
23.
The maximum electrons in n=4 shell =
24.
The angular momentum of an electron in Bohr’s second orbit is proportional to ___
25.
Which has the maximum number of orbitals?
26.
The ratio of velocities of electrons in n=1 and n=4 hydrogen orbits is
27.
Aufbau principle fails for
28.
A neutron was discovered by ___
29.
Which spectral line corresponds to the greatest energy difference?
30.
Ionisation enthalpy of He is high due to
31.
Bohr model is valid for
32.
Which transition emits visible light?
33.
Magnetic quantum number determines ___
34.
The uncertainty principle is significant for ___
35.
Which has the highest penetration?
36.
Which quantum number determines shape of orbital?
37.
Which describes wave nature of electron?
38.
Which orbital has spherical symmetry?
39.
Photoelectric effect proves ___
40.
The correct set of quantum numbers for the last electron of Cl (Z=17) is
42.
If an electron is in 3d orbital, the number of angular nodes =
43.
Energy of an electron varies inversely with ___ in Bohr’s model
44.
The charge/mass ratio of electron was measured by
45.
Wave number is proportional to
