1.
The maximum electrons in n=4 shell =
2.
The angular momentum of an electron in Bohr’s second orbit is proportional to ___
3.
Magnetic quantum number determines ___
4.
Which quantum number determines shape of orbital?
5.
Which has maximum effective nuclear charge?
6.
Which spectral line corresponds to the greatest energy difference?
8.
Principal quantum number determines
9.
In hydrogen, the wavelength of H-α is
10.
The energy of a photon is proportional to
11.
The number of radial nodes in 4p orbital is ___
12.
A neutron was discovered by ___
13.
Ionisation enthalpy of He is high due to
14.
Aufbau principle fails for
15.
Electron affinity increases ___
16.
Which orbital has spherical symmetry?
18.
If an electron is in 3d orbital, the number of angular nodes =
19.
The ratio of de Broglie wavelengths of electrons in n=1 and n=3 orbits of H-atom is:
20.
The number of allowed m values for d-orbital is
21.
Wave number is proportional to
22.
Which has the smallest wavelength?
23.
Hund’s rule deals with
24.
The ratio of velocities of electrons in n=1 and n=4 hydrogen orbits is
25.
Which subshell has highest energy?
26.
Photoelectric effect proves ___
27.
The orbital with highest penetration
28.
Bohr model is valid for
29.
The nodal plane concept is applicable to
30.
Which has the highest penetration?
31.
Energy of an electron varies inversely with ___ in Bohr’s model
32.
If n=4, the number of possible electrons =
33.
The first line of Lyman series corresponds to transition
34.
Which emits IR radiation?
35.
Ionisation energy is lowest for
36.
The orbital degeneracy of f-subshell =
37.
The correct set of quantum numbers for the last electron of Cl (Z=17) is
38.
Rutherford model fails because it cannot explain ___
39.
Which transition emits visible light?
40.
The charge/mass ratio of electron was measured by
41.
The uncertainty principle is significant for ___
42.
Which has the maximum number of orbitals?
43.
Which describes wave nature of electron?
44.
The number of radial nodes in 3s =
45.
The radius of second Bohr orbit of hydrogen (r₂) is
